diff --git a/var/spack/repos/builtin.mock/packages/a/package.py b/var/spack/repos/builtin.mock/packages/a/package.py
index 40b92240fc..0d75ee1256 100644
--- a/var/spack/repos/builtin.mock/packages/a/package.py
+++ b/var/spack/repos/builtin.mock/packages/a/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class A(Package):
     """Simple package with no dependencies"""
 
diff --git a/var/spack/repos/builtin.mock/packages/b/package.py b/var/spack/repos/builtin.mock/packages/b/package.py
index c447a56b48..5729f24e79 100644
--- a/var/spack/repos/builtin.mock/packages/b/package.py
+++ b/var/spack/repos/builtin.mock/packages/b/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class B(Package):
     """Simple package with no dependencies"""
 
diff --git a/var/spack/repos/builtin.mock/packages/c/package.py b/var/spack/repos/builtin.mock/packages/c/package.py
index 5b6079c4e3..80777a05bb 100644
--- a/var/spack/repos/builtin.mock/packages/c/package.py
+++ b/var/spack/repos/builtin.mock/packages/c/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class C(Package):
     """Simple package with no dependencies"""
 
diff --git a/var/spack/repos/builtin.mock/packages/callpath/package.py b/var/spack/repos/builtin.mock/packages/callpath/package.py
index c297a123b8..56b969df98 100644
--- a/var/spack/repos/builtin.mock/packages/callpath/package.py
+++ b/var/spack/repos/builtin.mock/packages/callpath/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Callpath(Package):
     homepage = "https://github.com/tgamblin/callpath"
     url      = "http://github.com/tgamblin/callpath-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/cmake-client/package.py b/var/spack/repos/builtin.mock/packages/cmake-client/package.py
index c58430317a..0c78f0bf68 100644
--- a/var/spack/repos/builtin.mock/packages/cmake-client/package.py
+++ b/var/spack/repos/builtin.mock/packages/cmake-client/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 def check(condition, msg):
     """Raise an install error if condition is False."""
     if not condition:
@@ -40,15 +41,14 @@ class CmakeClient(Package):
 
     depends_on('cmake', type='build')
 
-
     def setup_environment(self, spack_env, run_env):
         spack_cc    # Ensure spack module-scope variable is avaiabl
         check(from_cmake == "from_cmake",
               "setup_environment couldn't read global set by cmake.")
 
         check(self.spec['cmake'].link_arg == "test link arg",
-              "link arg on dependency spec not readable from setup_environment.")
-
+              "link arg on dependency spec not readable from "
+              "setup_environment.")
 
     def setup_dependent_environment(self, spack_env, run_env, dspec):
         spack_cc    # Ensure spack module-scope variable is avaiable
@@ -56,8 +56,8 @@ def setup_dependent_environment(self, spack_env, run_env, dspec):
               "setup_dependent_environment couldn't read global set by cmake.")
 
         check(self.spec['cmake'].link_arg == "test link arg",
-              "link arg on dependency spec not readable from setup_dependent_environment.")
-
+              "link arg on dependency spec not readable from "
+              "setup_dependent_environment.")
 
     def setup_dependent_package(self, module, dspec):
         spack_cc    # Ensure spack module-scope variable is avaiable
@@ -65,9 +65,8 @@ def setup_dependent_package(self, module, dspec):
               "setup_dependent_package couldn't read global set by cmake.")
 
         check(self.spec['cmake'].link_arg == "test link arg",
-              "link arg on dependency spec not readable from setup_dependent_package.")
-
-
+              "link arg on dependency spec not readable from "
+              "setup_dependent_package.")
 
     def install(self, spec, prefix):
         # check that cmake is in the global scope.
diff --git a/var/spack/repos/builtin.mock/packages/cmake/package.py b/var/spack/repos/builtin.mock/packages/cmake/package.py
index 0356cf8afb..c8b6464e69 100644
--- a/var/spack/repos/builtin.mock/packages/cmake/package.py
+++ b/var/spack/repos/builtin.mock/packages/cmake/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 def check(condition, msg):
     """Raise an install error if condition is False."""
     if not condition:
@@ -39,7 +40,6 @@ class Cmake(Package):
     version('3.4.3',    '4cb3ff35b2472aae70f542116d616e63',
             url='https://cmake.org/files/v3.4/cmake-3.4.3.tar.gz')
 
-
     def setup_environment(self, spack_env, run_env):
         spack_cc    # Ensure spack module-scope variable is avaiable
         spack_env.set('for_install', 'for_install')
@@ -48,7 +48,6 @@ def setup_dependent_environment(self, spack_env, run_env, dspec):
         spack_cc    # Ensure spack module-scope variable is avaiable
         spack_env.set('from_cmake', 'from_cmake')
 
-
     def setup_dependent_package(self, module, dspec):
         spack_cc    # Ensure spack module-scope variable is avaiable
 
@@ -57,7 +56,6 @@ def setup_dependent_package(self, module, dspec):
 
         self.spec.link_arg = "test link arg"
 
-
     def install(self, spec, prefix):
         mkdirp(prefix.bin)
 
diff --git a/var/spack/repos/builtin.mock/packages/direct_mpich/package.py b/var/spack/repos/builtin.mock/packages/direct_mpich/package.py
index 663908d56c..f38589ad4d 100644
--- a/var/spack/repos/builtin.mock/packages/direct_mpich/package.py
+++ b/var/spack/repos/builtin.mock/packages/direct_mpich/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class DirectMpich(Package):
     homepage = "http://www.example.com"
     url      = "http://www.example.com/direct_mpich-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/dyninst/package.py b/var/spack/repos/builtin.mock/packages/dyninst/package.py
index ad486011e2..daf1b82ec6 100644
--- a/var/spack/repos/builtin.mock/packages/dyninst/package.py
+++ b/var/spack/repos/builtin.mock/packages/dyninst/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Dyninst(Package):
     homepage = "https://paradyn.org"
     url      = "http://www.paradyn.org/release8.1/DyninstAPI-8.1.1.tgz"
diff --git a/var/spack/repos/builtin.mock/packages/e/package.py b/var/spack/repos/builtin.mock/packages/e/package.py
index b951a3eaa6..c764007563 100644
--- a/var/spack/repos/builtin.mock/packages/e/package.py
+++ b/var/spack/repos/builtin.mock/packages/e/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class E(Package):
     """Simple package with no dependencies"""
 
diff --git a/var/spack/repos/builtin.mock/packages/externalmodule/package.py b/var/spack/repos/builtin.mock/packages/externalmodule/package.py
index f7b0da3fd9..f7c9b056a4 100644
--- a/var/spack/repos/builtin.mock/packages/externalmodule/package.py
+++ b/var/spack/repos/builtin.mock/packages/externalmodule/package.py
@@ -25,6 +25,7 @@
 ##############################################################################
 from spack import *
 
+
 class Externalmodule(Package):
     homepage = "http://somewhere.com"
     url      = "http://somewhere.com/module-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/externalprereq/package.py b/var/spack/repos/builtin.mock/packages/externalprereq/package.py
index bd3c4348bf..226742f2cb 100644
--- a/var/spack/repos/builtin.mock/packages/externalprereq/package.py
+++ b/var/spack/repos/builtin.mock/packages/externalprereq/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Externalprereq(Package):
     homepage = "http://somewhere.com"
     url      = "http://somewhere.com/prereq-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/externaltest/package.py b/var/spack/repos/builtin.mock/packages/externaltest/package.py
index 2318887aec..252c42556e 100644
--- a/var/spack/repos/builtin.mock/packages/externaltest/package.py
+++ b/var/spack/repos/builtin.mock/packages/externaltest/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Externaltest(Package):
     homepage = "http://somewhere.com"
     url      = "http://somewhere.com/test-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/externaltool/package.py b/var/spack/repos/builtin.mock/packages/externaltool/package.py
index 9ff2396f36..d2daddd350 100644
--- a/var/spack/repos/builtin.mock/packages/externaltool/package.py
+++ b/var/spack/repos/builtin.mock/packages/externaltool/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Externaltool(Package):
     homepage = "http://somewhere.com"
     url      = "http://somewhere.com/tool-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/externalvirtual/package.py b/var/spack/repos/builtin.mock/packages/externalvirtual/package.py
index e19ef332f0..1f3553014b 100644
--- a/var/spack/repos/builtin.mock/packages/externalvirtual/package.py
+++ b/var/spack/repos/builtin.mock/packages/externalvirtual/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Externalvirtual(Package):
     homepage = "http://somewhere.com"
     url      = "http://somewhere.com/stuff-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/fake/package.py b/var/spack/repos/builtin.mock/packages/fake/package.py
index 15aabf1101..b83eec7470 100644
--- a/var/spack/repos/builtin.mock/packages/fake/package.py
+++ b/var/spack/repos/builtin.mock/packages/fake/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Fake(Package):
     homepage = "http://www.fake-spack-example.org"
     url      = "http://www.fake-spack-example.org/downloads/fake-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/git-test/package.py b/var/spack/repos/builtin.mock/packages/git-test/package.py
index aeea41146f..730e71ac6b 100644
--- a/var/spack/repos/builtin.mock/packages/git-test/package.py
+++ b/var/spack/repos/builtin.mock/packages/git-test/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class GitTest(Package):
     """Mock package that uses git for fetching."""
     homepage = "http://www.git-fetch-example.com"
diff --git a/var/spack/repos/builtin.mock/packages/hg-test/package.py b/var/spack/repos/builtin.mock/packages/hg-test/package.py
index 64719eb53c..70a9b7f2c7 100644
--- a/var/spack/repos/builtin.mock/packages/hg-test/package.py
+++ b/var/spack/repos/builtin.mock/packages/hg-test/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class HgTest(Package):
     """Test package that does fetching with mercurial."""
     homepage = "http://www.hg-fetch-example.com"
diff --git a/var/spack/repos/builtin.mock/packages/hypre/package.py b/var/spack/repos/builtin.mock/packages/hypre/package.py
index 3aedea9bf2..b9e31b09dc 100644
--- a/var/spack/repos/builtin.mock/packages/hypre/package.py
+++ b/var/spack/repos/builtin.mock/packages/hypre/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Hypre(Package):
     """Hypre is included here as an example of a package that depends on
        both LAPACK and BLAS."""
diff --git a/var/spack/repos/builtin.mock/packages/indirect_mpich/package.py b/var/spack/repos/builtin.mock/packages/indirect_mpich/package.py
index 6ed779889b..bbbf196129 100644
--- a/var/spack/repos/builtin.mock/packages/indirect_mpich/package.py
+++ b/var/spack/repos/builtin.mock/packages/indirect_mpich/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class IndirectMpich(Package):
     """Test case for a package that depends on MPI and one of its
        dependencies requires a *particular version* of MPI.
diff --git a/var/spack/repos/builtin.mock/packages/libdwarf/package.py b/var/spack/repos/builtin.mock/packages/libdwarf/package.py
index b53e295e23..0fcbe4a62e 100644
--- a/var/spack/repos/builtin.mock/packages/libdwarf/package.py
+++ b/var/spack/repos/builtin.mock/packages/libdwarf/package.py
@@ -23,11 +23,11 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
 
 # Only build certain parts of dwarf because the other ones break.
 dwarf_dirs = ['libdwarf', 'dwarfdump2']
 
+
 class Libdwarf(Package):
     homepage = "http://www.prevanders.net/dwarf.html"
     url      = "http://www.prevanders.net/libdwarf-20130729.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/libelf/package.py b/var/spack/repos/builtin.mock/packages/libelf/package.py
index f52d8cefe1..90d00ad339 100644
--- a/var/spack/repos/builtin.mock/packages/libelf/package.py
+++ b/var/spack/repos/builtin.mock/packages/libelf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libelf(Package):
     homepage = "http://www.mr511.de/software/english.html"
     url      = "http://www.mr511.de/software/libelf-0.8.13.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/mpich/package.py b/var/spack/repos/builtin.mock/packages/mpich/package.py
index f278f26b8b..936127398c 100644
--- a/var/spack/repos/builtin.mock/packages/mpich/package.py
+++ b/var/spack/repos/builtin.mock/packages/mpich/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Mpich(Package):
     homepage   = "http://www.mpich.org"
     url        = "http://www.mpich.org/static/downloads/3.0.4/mpich-3.0.4.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/mpich2/package.py b/var/spack/repos/builtin.mock/packages/mpich2/package.py
index e6b68d2490..c92b4ba43a 100644
--- a/var/spack/repos/builtin.mock/packages/mpich2/package.py
+++ b/var/spack/repos/builtin.mock/packages/mpich2/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Mpich2(Package):
     homepage   = "http://www.mpich.org"
     url        = "http://www.mpich.org/static/downloads/1.5/mpich2-1.5.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/multimethod/package.py b/var/spack/repos/builtin.mock/packages/multimethod/package.py
index ca991632dd..fa3f815135 100644
--- a/var/spack/repos/builtin.mock/packages/multimethod/package.py
+++ b/var/spack/repos/builtin.mock/packages/multimethod/package.py
@@ -22,12 +22,10 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import imp
-from llnl.util.filesystem import join_path
-from spack.util.naming import mod_to_class
 from spack import *
 import spack.architecture
 
+
 class Multimethod(Package):
     """This package is designed for use with Spack's multimethod test.
        It has a bunch of test cases for the @when decorator that the
@@ -52,7 +50,6 @@ def no_version_2(self):
     def no_version_2(self):
         return 4
 
-
     #
     # These functions overlap, so there is ambiguity, but we'll take
     # the first one.
@@ -65,7 +62,6 @@ def version_overlap(self):
     def version_overlap(self):
         return 2
 
-
     #
     # More complicated case with cascading versions.
     #
@@ -84,7 +80,6 @@ def mpi_version(self):
     def mpi_version(self):
         return 1
 
-
     #
     # Use these to test whether the default method is called when no
     # match is found.  This also tests whether we can switch methods
@@ -101,8 +96,6 @@ def has_a_default(self):
     def has_a_default(self):
         return 'intel'
 
-
-
     #
     # Make sure we can switch methods on different target
     #
@@ -112,15 +105,16 @@ def has_a_default(self):
         targets = targets[:-1]
 
     for target in targets:
-        @when('target='+target.name)
+        @when('target=' + target.name)
         def different_by_target(self):
-            if isinstance(self.spec.architecture.target,basestring):
+            if isinstance(self.spec.architecture.target, basestring):
                 return self.spec.architecture.target
             else:
                 return self.spec.architecture.target.name
     #
     # Make sure we can switch methods on different dependencies
     #
+
     @when('^mpich')
     def different_by_dep(self):
         return 'mpich'
@@ -129,7 +123,6 @@ def different_by_dep(self):
     def different_by_dep(self):
         return 'zmpi'
 
-
     #
     # Make sure we can switch on virtual dependencies
     #
diff --git a/var/spack/repos/builtin.mock/packages/netlib-blas/package.py b/var/spack/repos/builtin.mock/packages/netlib-blas/package.py
index 9d567f2e9b..0a5b1d0e6a 100644
--- a/var/spack/repos/builtin.mock/packages/netlib-blas/package.py
+++ b/var/spack/repos/builtin.mock/packages/netlib-blas/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class NetlibBlas(Package):
     homepage = "http://www.netlib.org/lapack/"
     url      = "http://www.netlib.org/lapack/lapack-3.5.0.tgz"
diff --git a/var/spack/repos/builtin.mock/packages/netlib-lapack/package.py b/var/spack/repos/builtin.mock/packages/netlib-lapack/package.py
index 46d6ae43dc..755d3001a4 100644
--- a/var/spack/repos/builtin.mock/packages/netlib-lapack/package.py
+++ b/var/spack/repos/builtin.mock/packages/netlib-lapack/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class NetlibLapack(Package):
     homepage = "http://www.netlib.org/lapack/"
     url      = "http://www.netlib.org/lapack/lapack-3.5.0.tgz"
diff --git a/var/spack/repos/builtin.mock/packages/openblas-with-lapack/package.py b/var/spack/repos/builtin.mock/packages/openblas-with-lapack/package.py
index b36237c1e2..0f14fbaa61 100644
--- a/var/spack/repos/builtin.mock/packages/openblas-with-lapack/package.py
+++ b/var/spack/repos/builtin.mock/packages/openblas-with-lapack/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class OpenblasWithLapack(Package):
     """Dummy version of OpenBLAS that also provides LAPACK, for testing."""
     homepage = "http://www.openblas.net"
diff --git a/var/spack/repos/builtin.mock/packages/openblas/package.py b/var/spack/repos/builtin.mock/packages/openblas/package.py
index 5b39447e83..f6cdeeea49 100644
--- a/var/spack/repos/builtin.mock/packages/openblas/package.py
+++ b/var/spack/repos/builtin.mock/packages/openblas/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Openblas(Package):
     """OpenBLAS: An optimized BLAS library"""
     homepage = "http://www.openblas.net"
diff --git a/var/spack/repos/builtin.mock/packages/optional-dep-test-2/package.py b/var/spack/repos/builtin.mock/packages/optional-dep-test-2/package.py
index f97959c763..337f54e24e 100644
--- a/var/spack/repos/builtin.mock/packages/optional-dep-test-2/package.py
+++ b/var/spack/repos/builtin.mock/packages/optional-dep-test-2/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class OptionalDepTest2(Package):
     """Depends on the optional-dep-test package"""
 
diff --git a/var/spack/repos/builtin.mock/packages/optional-dep-test-3/package.py b/var/spack/repos/builtin.mock/packages/optional-dep-test-3/package.py
index d8fe33c3da..2904b3782d 100644
--- a/var/spack/repos/builtin.mock/packages/optional-dep-test-3/package.py
+++ b/var/spack/repos/builtin.mock/packages/optional-dep-test-3/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class OptionalDepTest3(Package):
     """Depends on the optional-dep-test package"""
 
diff --git a/var/spack/repos/builtin.mock/packages/optional-dep-test/package.py b/var/spack/repos/builtin.mock/packages/optional-dep-test/package.py
index 80c1da55f8..2c07e61769 100644
--- a/var/spack/repos/builtin.mock/packages/optional-dep-test/package.py
+++ b/var/spack/repos/builtin.mock/packages/optional-dep-test/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class OptionalDepTest(Package):
     """Description"""
 
diff --git a/var/spack/repos/builtin.mock/packages/python/package.py b/var/spack/repos/builtin.mock/packages/python/package.py
index dc21b475e5..a5290161ad 100644
--- a/var/spack/repos/builtin.mock/packages/python/package.py
+++ b/var/spack/repos/builtin.mock/packages/python/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Python(Package):
     """Dummy Python package to demonstrate preferred versions."""
     homepage = "http://www.python.org"
@@ -40,4 +41,3 @@ class Python(Package):
 
     def install(self, spec, prefix):
         pass
-
diff --git a/var/spack/repos/builtin.mock/packages/svn-test/package.py b/var/spack/repos/builtin.mock/packages/svn-test/package.py
index 2f197593e0..01d0929c28 100644
--- a/var/spack/repos/builtin.mock/packages/svn-test/package.py
+++ b/var/spack/repos/builtin.mock/packages/svn-test/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class SvnTest(Package):
     """Mock package that uses svn for fetching."""
     url      = "http://www.example.com/svn-test-1.0.tar.gz"
diff --git a/var/spack/repos/builtin.mock/packages/trivial_install_test_package/package.py b/var/spack/repos/builtin.mock/packages/trivial_install_test_package/package.py
index 7c65909ad2..2129d9788b 100644
--- a/var/spack/repos/builtin.mock/packages/trivial_install_test_package/package.py
+++ b/var/spack/repos/builtin.mock/packages/trivial_install_test_package/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class TrivialInstallTestPackage(Package):
     """This package is a stub with a trivial install method.  It allows us
        to test the install and uninstall logic of spack."""
diff --git a/var/spack/repos/builtin.mock/packages/zmpi/package.py b/var/spack/repos/builtin.mock/packages/zmpi/package.py
index fcd3afe93b..b6a5b33011 100644
--- a/var/spack/repos/builtin.mock/packages/zmpi/package.py
+++ b/var/spack/repos/builtin.mock/packages/zmpi/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Zmpi(Package):
     """This is a fake MPI package used to demonstrate virtual package providers
        with dependencies."""
diff --git a/var/spack/repos/builtin/packages/LuaJIT/package.py b/var/spack/repos/builtin/packages/LuaJIT/package.py
index db6f7d3cad..244c63c8fb 100644
--- a/var/spack/repos/builtin/packages/LuaJIT/package.py
+++ b/var/spack/repos/builtin/packages/LuaJIT/package.py
@@ -25,6 +25,7 @@
 import os
 from spack import *
 
+
 class Luajit(Package):
     """Flast flexible JITed lua"""
     homepage = "http://www.luajit.org"
diff --git a/var/spack/repos/builtin/packages/SAMRAI/package.py b/var/spack/repos/builtin/packages/SAMRAI/package.py
index 73c51ced23..e0648290d6 100644
--- a/var/spack/repos/builtin/packages/SAMRAI/package.py
+++ b/var/spack/repos/builtin/packages/SAMRAI/package.py
@@ -24,12 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class Samrai(Package):
     """SAMRAI (Structured Adaptive Mesh Refinement Application Infrastructure)
-       is an object-oriented C++ software library enables exploration of numerical,
-       algorithmic, parallel computing, and software issues associated with applying
-       structured adaptive mesh refinement (SAMR) technology in large-scale parallel
-       application development.
+       is an object-oriented C++ software library enables exploration of
+       numerical, algorithmic, parallel computing, and software issues
+       associated with applying structured adaptive mesh refinement
+       (SAMR) technology in large-scale parallel application development.
+
     """
     homepage = "https://computation.llnl.gov/project/SAMRAI/"
     url      = "https://computation.llnl.gov/project/SAMRAI/download/SAMRAI-v3.9.1.tar.gz"
diff --git a/var/spack/repos/builtin/packages/activeharmony/package.py b/var/spack/repos/builtin/packages/activeharmony/package.py
index 9d15bd71d9..6a4e67a1ca 100644
--- a/var/spack/repos/builtin/packages/activeharmony/package.py
+++ b/var/spack/repos/builtin/packages/activeharmony/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Activeharmony(Package):
-    """Active Harmony: a framework for auto-tuning (the automated search for values to improve the performance of a target application)."""
+    """Active Harmony: a framework for auto-tuning (the automated search for
+       values to improve the performance of a target application)."""
     homepage = "http://www.dyninst.org/harmony"
     url      = "http://www.dyninst.org/sites/default/files/downloads/harmony/ah-4.5.tar.gz"
 
@@ -34,6 +36,3 @@ class Activeharmony(Package):
     def install(self, spec, prefix):
         make("CFLAGS=-O3")
         make("install", 'PREFIX=%s' % prefix)
-
-from spack import *
-
diff --git a/var/spack/repos/builtin/packages/adept-utils/package.py b/var/spack/repos/builtin/packages/adept-utils/package.py
index 592681bb82..1a6998fd96 100644
--- a/var/spack/repos/builtin/packages/adept-utils/package.py
+++ b/var/spack/repos/builtin/packages/adept-utils/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class AdeptUtils(Package):
     """Utility libraries for LLNL performance tools."""
 
diff --git a/var/spack/repos/builtin/packages/adol-c/package.py b/var/spack/repos/builtin/packages/adol-c/package.py
index a6052ad7bd..c5d53de230 100644
--- a/var/spack/repos/builtin/packages/adol-c/package.py
+++ b/var/spack/repos/builtin/packages/adol-c/package.py
@@ -23,21 +23,24 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import sys
+
 
 class AdolC(Package):
-    """A package for the automatic differentiation of first and higher derivatives of vector functions in C and C++ programs by operator overloading."""
+    """A package for the automatic differentiation of first and higher
+    derivatives of vector functions in C and C++ programs by operator
+    overloading."""
     homepage = "https://projects.coin-or.org/ADOL-C"
     url      = "http://www.coin-or.org/download/source/ADOL-C/ADOL-C-2.6.1.tgz"
 
     version('head',  svn='https://projects.coin-or.org/svn/ADOL-C/trunk/')
     version('2.6.1', '1032b28427d6e399af4610e78c0f087b')
-    
+
     variant('doc',      default=True,  description='Install documentation')
     variant('openmp',   default=False, description='Enable OpenMP support')
     variant('sparse',   default=False, description='Enable sparse drivers')
-    variant('tests',    default=True,  description='Build all included examples as a test case')
-    
+    variant('tests',    default=True,
+            description='Build all included examples as a test case')
+
     patch('openmp_exam.patch')
 
     def install(self, spec, prefix):
@@ -49,10 +52,14 @@ def install(self, spec, prefix):
         if '+openmp' in spec:
             if spec.satisfies('%gcc'):
                 make_args.extend([
-                    '--with-openmp-flag=-fopenmp' # FIXME: Is this required? -I <path to omp.h> -L <LLVM OpenMP library path>
+                    # FIXME: Is this required? -I <path to omp.h> -L <LLVM
+                    # OpenMP library path>
+                    '--with-openmp-flag=-fopenmp'
                 ])
             else:
-                raise InstallError("OpenMP flags for compilers other than GCC are not implemented.")
+                raise InstallError(
+                    "OpenMP flags for compilers other than GCC "
+                    "are not implemented.")
 
         if '+sparse' in spec:
             make_args.extend([
@@ -63,7 +70,7 @@ def install(self, spec, prefix):
         # whether Adol-C works as expected
         if '+tests' in spec:
             make_args.extend([
-                '--enable-docexa', # Documeted examples
+                '--enable-docexa',  # Documeted examples
                 '--enable-addexa'  # Additional examples
             ])
             if '+openmp' in spec:
@@ -74,31 +81,36 @@ def install(self, spec, prefix):
         configure(*make_args)
         make()
         make("install")
-        
+
         # Copy the config.h file, as some packages might require it
         source_directory = self.stage.source_path
-        config_h = join_path(source_directory,'ADOL-C','src','config.h')
-        install(config_h, join_path(prefix.include,'adolc'))
-        
+        config_h = join_path(source_directory, 'ADOL-C', 'src', 'config.h')
+        install(config_h, join_path(prefix.include, 'adolc'))
+
         # Install documentation to {prefix}/share
         if '+doc' in spec:
-            install_tree(join_path('ADOL-C','doc'),
-                         join_path(prefix.share,'doc'))
-        
+            install_tree(join_path('ADOL-C', 'doc'),
+                         join_path(prefix.share, 'doc'))
+
         # Install examples to {prefix}/share
         if '+tests' in spec:
-            install_tree(join_path('ADOL-C','examples'),
-                         join_path(prefix.share,'examples'))
-        
+            install_tree(join_path('ADOL-C', 'examples'),
+                         join_path(prefix.share, 'examples'))
+
             # Run some examples that don't require user input
             # TODO: Check that bundled examples produce the correct results
-            with working_dir(join_path(source_directory,'ADOL-C','examples')):
+            with working_dir(join_path(
+                    source_directory, 'ADOL-C', 'examples')):
                 Executable('./tapeless_scalar')()
                 Executable('./tapeless_vector')()
-              
-            with working_dir(join_path(source_directory,'ADOL-C','examples','additional_examples')):
+
+            with working_dir(join_path(
+                    source_directory,
+                    'ADOL-C', 'examples', 'additional_examples')):
                 Executable('./checkpointing/checkpointing')()
-                
+
             if '+openmp' in spec:
-                with working_dir(join_path(source_directory,'ADOL-C','examples','additional_examples')):
+                with working_dir(join_path(
+                        source_directory,
+                        'ADOL-C', 'examples', 'additional_examples')):
                     Executable('./checkpointing/checkpointing')()
diff --git a/var/spack/repos/builtin/packages/antlr/package.py b/var/spack/repos/builtin/packages/antlr/package.py
index eb67facaf3..891061c62f 100644
--- a/var/spack/repos/builtin/packages/antlr/package.py
+++ b/var/spack/repos/builtin/packages/antlr/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class Antlr(Package):
-    
+
     homepage = "http://www.antlr.org"
     url      = "https://github.com/antlr/antlr/tarball/v2.7.7"
 
@@ -41,22 +42,23 @@ class Antlr(Package):
     # CharScanner.hpp must include this line: #include <cstring> or else
     # ncap2 will not compile (this tarball is already patched).
     version('2.7.7', '914865e853fe8e1e61a9f23d045cb4ab',
-        # Patched version as described above
-        url='http://dust.ess.uci.edu/tmp/antlr-2.7.7.tar.gz')
-        # Unpatched version
-        # url='http://dust.ess.uci.edu/nco/antlr-2.7.7.tar.gz')
+            # Patched version as described above
+            url='http://dust.ess.uci.edu/tmp/antlr-2.7.7.tar.gz')
+    # Unpatched version
+    # url='http://dust.ess.uci.edu/nco/antlr-2.7.7.tar.gz')
 
     variant('cxx', default=False, description='Enable ANTLR for C++')
     variant('java', default=False, description='Enable ANTLR for Java')
     variant('python', default=False, description='Enable ANTLR for Python')
     variant('csharp', default=False, description='Enable ANTLR for Csharp')
 
-
     def install(self, spec, prefix):
         # Check for future enabling of variants
         for v in ('+java', '+python', '+csharp'):
             if v in spec:
-                raise Error('Illegal variant %s; for now, Spack only knows how to build antlr or antlr+cxx')
+                raise Error(
+                    ('Illegal variant %s; ' % v) + 'for now, '
+                    'Spack only knows how to build antlr or antlr+cxx')
 
         config_args = [
             '--prefix=%s' % prefix,
diff --git a/var/spack/repos/builtin/packages/apex/package.py b/var/spack/repos/builtin/packages/apex/package.py
index 59fbe50c93..832e10a1ec 100644
--- a/var/spack/repos/builtin/packages/apex/package.py
+++ b/var/spack/repos/builtin/packages/apex/package.py
@@ -25,6 +25,7 @@
 from spack import *
 from spack.util.environment import *
 
+
 class Apex(Package):
     homepage = "http://github.com/khuck/xpress-apex"
     url      = "http://github.com/khuck/xpress-apex/archive/v0.1.tar.gz"
@@ -39,17 +40,17 @@ class Apex(Package):
 
     def install(self, spec, prefix):
 
-        path=get_path("PATH")
+        path = get_path("PATH")
         path.remove(spec["binutils"].prefix.bin)
         path_set("PATH", path)
         with working_dir("build", create=True):
             cmake('-DBOOST_ROOT=%s' % spec['boost'].prefix,
-                '-DUSE_BFD=TRUE', 
-                '-DBFD_ROOT=%s' % spec['binutils'].prefix,
-                '-DUSE_ACTIVEHARMONY=TRUE', 
-                '-DACTIVEHARMONY_ROOT=%s' % spec['activeharmony'].prefix,
-                '-DUSE_OMPT=TRUE', 
-                '-DOMPT_ROOT=%s' % spec['ompt-openmp'].prefix,
-                '..', *std_cmake_args)
+                  '-DUSE_BFD=TRUE',
+                  '-DBFD_ROOT=%s' % spec['binutils'].prefix,
+                  '-DUSE_ACTIVEHARMONY=TRUE',
+                  '-DACTIVEHARMONY_ROOT=%s' % spec['activeharmony'].prefix,
+                  '-DUSE_OMPT=TRUE',
+                  '-DOMPT_ROOT=%s' % spec['ompt-openmp'].prefix,
+                  '..', *std_cmake_args)
             make()
             make("install")
diff --git a/var/spack/repos/builtin/packages/apr-util/package.py b/var/spack/repos/builtin/packages/apr-util/package.py
index 05dc670aed..8e01d3bbdd 100644
--- a/var/spack/repos/builtin/packages/apr-util/package.py
+++ b/var/spack/repos/builtin/packages/apr-util/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class AprUtil(Package):
     """Apache Portable Runtime Utility"""
     homepage  = 'https://apr.apache.org/'
diff --git a/var/spack/repos/builtin/packages/apr/package.py b/var/spack/repos/builtin/packages/apr/package.py
index 398e1c323d..0cd51f52e3 100644
--- a/var/spack/repos/builtin/packages/apr/package.py
+++ b/var/spack/repos/builtin/packages/apr/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Apr(Package):
     """Apache portable runtime."""
     homepage  = 'https://apr.apache.org/'
diff --git a/var/spack/repos/builtin/packages/arpack-ng/package.py b/var/spack/repos/builtin/packages/arpack-ng/package.py
index 2874930cdd..728c2345f2 100644
--- a/var/spack/repos/builtin/packages/arpack-ng/package.py
+++ b/var/spack/repos/builtin/packages/arpack-ng/package.py
@@ -59,7 +59,8 @@ class ArpackNg(Package):
     version('3.4.0', 'ae9ca13f2143a7ea280cb0e2fd4bfae4')
     version('3.3.0', 'ed3648a23f0a868a43ef44c97a21bad5')
 
-    variant('shared', default=True, description='Enables the build of shared libraries')
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
     variant('mpi', default=False, description='Activates MPI support')
 
     # The function pdlamch10 does not set the return variable.
diff --git a/var/spack/repos/builtin/packages/asciidoc/package.py b/var/spack/repos/builtin/packages/asciidoc/package.py
index a846e0ba65..be8db684f5 100644
--- a/var/spack/repos/builtin/packages/asciidoc/package.py
+++ b/var/spack/repos/builtin/packages/asciidoc/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Asciidoc(Package):
     """ A presentable text document format for writing articles, UNIX man
     pages and other small to medium sized documents."""
diff --git a/var/spack/repos/builtin/packages/atop/package.py b/var/spack/repos/builtin/packages/atop/package.py
index 9cacafc634..e3a9d464a9 100644
--- a/var/spack/repos/builtin/packages/atop/package.py
+++ b/var/spack/repos/builtin/packages/atop/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Atop(Package):
     """Atop is an ASCII full-screen performance monitor for Linux"""
     homepage = "http://www.atoptool.nl/index.php"
@@ -37,4 +38,4 @@ def install(self, spec, prefix):
         install("atop", join_path(prefix.bin, "atop"))
         mkdirp(join_path(prefix.man, "man1"))
         install(join_path("man", "atop.1"),
-        join_path(prefix.man, "man1", "atop.1"))
+                join_path(prefix.man, "man1", "atop.1"))
diff --git a/var/spack/repos/builtin/packages/automaded/package.py b/var/spack/repos/builtin/packages/automaded/package.py
index 2b4681778f..7e586b2991 100644
--- a/var/spack/repos/builtin/packages/automaded/package.py
+++ b/var/spack/repos/builtin/packages/automaded/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Automaded(Package):
     """AutomaDeD (Automata-based Debugging for Dissimilar parallel
        tasks) is a tool for automatic diagnosis of performance and
diff --git a/var/spack/repos/builtin/packages/bash/package.py b/var/spack/repos/builtin/packages/bash/package.py
index 5820595be9..e0cd114635 100644
--- a/var/spack/repos/builtin/packages/bash/package.py
+++ b/var/spack/repos/builtin/packages/bash/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Bash(Package):
     """The GNU Project's Bourne Again SHell."""
 
diff --git a/var/spack/repos/builtin/packages/bbcp/package.py b/var/spack/repos/builtin/packages/bbcp/package.py
index 09e897f34e..f69ed395a3 100644
--- a/var/spack/repos/builtin/packages/bbcp/package.py
+++ b/var/spack/repos/builtin/packages/bbcp/package.py
@@ -24,18 +24,22 @@
 ##############################################################################
 from spack import *
 
+
 class Bbcp(Package):
     """Securely and quickly copy data from source to target"""
     homepage = "http://www.slac.stanford.edu/~abh/bbcp/"
 
-    version('git', git='http://www.slac.stanford.edu/~abh/bbcp/bbcp.git', branch="master")
+    version('git', git='http://www.slac.stanford.edu/~abh/bbcp/bbcp.git',
+            branch="master")
 
     def install(self, spec, prefix):
         cd("src")
         make()
-        # BBCP wants to build the executable in a directory whose name depends on the system type
+        # BBCP wants to build the executable in a directory whose name depends
+        # on the system type
         makesname = Executable("../MakeSname")
-        bbcp_executable_path = "../bin/%s/bbcp" % makesname(output=str).rstrip("\n")
+        bbcp_executable_path = "../bin/%s/bbcp" % makesname(
+            output=str).rstrip("\n")
         destination_path = "%s/bin/" % prefix
         mkdirp(destination_path)
         install(bbcp_executable_path, destination_path)
diff --git a/var/spack/repos/builtin/packages/bdw-gc/package.py b/var/spack/repos/builtin/packages/bdw-gc/package.py
index 2c61c21b43..5120266319 100644
--- a/var/spack/repos/builtin/packages/bdw-gc/package.py
+++ b/var/spack/repos/builtin/packages/bdw-gc/package.py
@@ -34,7 +34,8 @@ class BdwGc(Package):
 
     version('7.4.4', '96d18b0448a841c88d56e4ab3d180297')
 
-    variant('libatomic-ops', default=True, description='Use external libatomic-ops')
+    variant('libatomic-ops', default=True,
+            description='Use external libatomic-ops')
 
     depends_on('libatomic-ops', when='+libatomic-ops')
 
diff --git a/var/spack/repos/builtin/packages/bear/package.py b/var/spack/repos/builtin/packages/bear/package.py
index a137fded08..f52050d7b9 100644
--- a/var/spack/repos/builtin/packages/bear/package.py
+++ b/var/spack/repos/builtin/packages/bear/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Bear(Package):
-    """Bear is a tool that generates a compilation database for clang tooling from non-cmake build systems."""
+    """Bear is a tool that generates a compilation database for clang tooling
+    from non-cmake build systems."""
     homepage = "https://github.com/rizsotto/Bear"
     url      = "https://github.com/rizsotto/Bear/archive/2.0.4.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/bib2xhtml/package.py b/var/spack/repos/builtin/packages/bib2xhtml/package.py
index a9cbd204b6..b356038180 100644
--- a/var/spack/repos/builtin/packages/bib2xhtml/package.py
+++ b/var/spack/repos/builtin/packages/bib2xhtml/package.py
@@ -25,10 +25,11 @@
 from spack import *
 from glob import glob
 
+
 class Bib2xhtml(Package):
     """bib2xhtml is a program that converts BibTeX files into HTML."""
     homepage = "http://www.spinellis.gr/sw/textproc/bib2xhtml/"
-    url='http://www.spinellis.gr/sw/textproc/bib2xhtml/bib2xhtml-v3.0-15-gf506.tar.gz'
+    url = 'http://www.spinellis.gr/sw/textproc/bib2xhtml/bib2xhtml-v3.0-15-gf506.tar.gz'
 
     version('3.0-15-gf506', 'a26ba02fe0053bbbf2277bdf0acf8645')
 
diff --git a/var/spack/repos/builtin/packages/bison/package.py b/var/spack/repos/builtin/packages/bison/package.py
index c7a125df15..70795f05cc 100644
--- a/var/spack/repos/builtin/packages/bison/package.py
+++ b/var/spack/repos/builtin/packages/bison/package.py
@@ -24,9 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Bison(Package):
-    """Bison is a general-purpose parser generator that converts 
-    an annotated context-free grammar into a deterministic LR or 
+    """Bison is a general-purpose parser generator that converts
+    an annotated context-free grammar into a deterministic LR or
     generalized LR (GLR) parser employing LALR(1) parser tables."""
 
     homepage = "http://www.gnu.org/software/bison/"
diff --git a/var/spack/repos/builtin/packages/blitz/package.py b/var/spack/repos/builtin/packages/blitz/package.py
index acc6ddcd07..c92e49a732 100644
--- a/var/spack/repos/builtin/packages/blitz/package.py
+++ b/var/spack/repos/builtin/packages/blitz/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Blitz(Package):
     """N-dimensional arrays for C++"""
     homepage = "http://github.com/blitzpp/blitz"
diff --git a/var/spack/repos/builtin/packages/boost/package.py b/var/spack/repos/builtin/packages/boost/package.py
index 67294fb9a1..690a05a150 100644
--- a/var/spack/repos/builtin/packages/boost/package.py
+++ b/var/spack/repos/builtin/packages/boost/package.py
@@ -102,13 +102,18 @@ class Boost(Package):
 
     for lib in all_libs:
         variant(lib, default=(lib not in default_noinstall_libs),
-            description="Compile with {0} library".format(lib))
+                description="Compile with {0} library".format(lib))
 
-    variant('debug', default=False, description='Switch to the debug version of Boost')
-    variant('shared', default=True, description="Additionally build shared libraries")
-    variant('multithreaded', default=True, description="Build multi-threaded versions of libraries")
-    variant('singlethreaded', default=True, description="Build single-threaded versions of libraries")
-    variant('icu_support', default=False, description="Include ICU support (for regex/locale libraries)")
+    variant('debug', default=False,
+            description='Switch to the debug version of Boost')
+    variant('shared', default=True,
+            description="Additionally build shared libraries")
+    variant('multithreaded', default=True,
+            description="Build multi-threaded versions of libraries")
+    variant('singlethreaded', default=True,
+            description="Build single-threaded versions of libraries")
+    variant('icu_support', default=False,
+            description="Include ICU support (for regex/locale libraries)")
     variant('graph', default=False, description="Build the Boost Graph library")
 
     depends_on('icu', when='+icu_support')
@@ -128,8 +133,7 @@ def url_for_version(self, version):
         parts = [str(p) for p in Version(version)]
         dots = ".".join(parts)
         underscores = "_".join(parts)
-        return "http://downloads.sourceforge.net/project/boost" \
-               "/boost/%s/boost_%s.tar.bz2" % (dots, underscores)
+        return "http://downloads.sourceforge.net/project/boost/boost/%s/boost_%s.tar.bz2" % (dots, underscores)
 
     def determine_toolset(self, spec):
         if spec.satisfies("platform=darwin"):
@@ -158,7 +162,7 @@ def determine_bootstrap_options(self, spec, withLibs, options):
         with open('user-config.jam', 'w') as f:
             compiler_wrapper = join_path(spack.build_env_path, 'c++')
             f.write("using {0} : : {1} ;\n".format(boostToolsetId,
-                    compiler_wrapper))
+                                                   compiler_wrapper))
 
             if '+mpi' in spec:
                 f.write('using mpi : %s ;\n' %
diff --git a/var/spack/repos/builtin/packages/bowtie2/package.py b/var/spack/repos/builtin/packages/bowtie2/package.py
index 6d641da49b..a8a1a34ed4 100644
--- a/var/spack/repos/builtin/packages/bowtie2/package.py
+++ b/var/spack/repos/builtin/packages/bowtie2/package.py
@@ -24,12 +24,15 @@
 ##############################################################################
 from spack import *
 from glob import glob
+
+
 class Bowtie2(Package):
     """Description"""
     homepage = "bowtie-bio.sourceforge.net/bowtie2/index.shtml"
-    version('2.2.5','51fa97a862d248d7ee660efc1147c75f', url = "http://downloads.sourceforge.net/project/bowtie-bio/bowtie2/2.2.5/bowtie2-2.2.5-source.zip")
+    version('2.2.5', '51fa97a862d248d7ee660efc1147c75f',
+            url="http://downloads.sourceforge.net/project/bowtie-bio/bowtie2/2.2.5/bowtie2-2.2.5-source.zip")
 
-    patch('bowtie2-2.5.patch',when='@2.2.5', level=0)
+    patch('bowtie2-2.5.patch', when='@2.2.5', level=0)
 
     def install(self, spec, prefix):
         make()
@@ -45,4 +48,3 @@ def install(self, spec, prefix):
         # install('bowtie2-inspect',prefix.bin)
         # install('bowtie2-inspect-l',prefix.bin)
         # install('bowtie2-inspect-s',prefix.bin)
-
diff --git a/var/spack/repos/builtin/packages/boxlib/package.py b/var/spack/repos/builtin/packages/boxlib/package.py
index 216ae1ec12..4f41aba6c6 100644
--- a/var/spack/repos/builtin/packages/boxlib/package.py
+++ b/var/spack/repos/builtin/packages/boxlib/package.py
@@ -24,12 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Boxlib(Package):
     """BoxLib, a software framework for massively parallel
        block-structured adaptive mesh refinement (AMR) codes."""
 
     homepage = "https://ccse.lbl.gov/BoxLib/"
-    url = "https://ccse.lbl.gov/pub/Downloads/BoxLib.git";
+    url = "https://ccse.lbl.gov/pub/Downloads/BoxLib.git"
 
     # TODO: figure out how best to version this.  No tags in the repo!
     version('master', git='https://ccse.lbl.gov/pub/Downloads/BoxLib.git')
@@ -47,4 +48,3 @@ def install(self, spec, prefix):
         cmake('.', *args)
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/c-blosc/package.py b/var/spack/repos/builtin/packages/c-blosc/package.py
index 49f9861126..4ebf3811a5 100644
--- a/var/spack/repos/builtin/packages/c-blosc/package.py
+++ b/var/spack/repos/builtin/packages/c-blosc/package.py
@@ -27,6 +27,7 @@
 
 from spack import *
 
+
 class CBlosc(Package):
     """Blosc, an extremely fast, multi-threaded, meta-compressor library"""
     homepage = "http://www.blosc.org"
diff --git a/var/spack/repos/builtin/packages/caliper/package.py b/var/spack/repos/builtin/packages/caliper/package.py
index 4a0fc54acc..e5aed5ed65 100644
--- a/var/spack/repos/builtin/packages/caliper/package.py
+++ b/var/spack/repos/builtin/packages/caliper/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Caliper(Package):
     """
     Caliper is a generic context annotation system. It gives programmers the
@@ -44,7 +45,7 @@ class Caliper(Package):
     depends_on('cmake', type='build')
 
     def install(self, spec, prefix):
-      with working_dir('build', create=True):
-        cmake('..', *std_cmake_args)
-        make()
-        make("install")
+        with working_dir('build', create=True):
+            cmake('..', *std_cmake_args)
+            make()
+            make("install")
diff --git a/var/spack/repos/builtin/packages/callpath/package.py b/var/spack/repos/builtin/packages/callpath/package.py
index 2f171fb9ce..f8227fa49e 100644
--- a/var/spack/repos/builtin/packages/callpath/package.py
+++ b/var/spack/repos/builtin/packages/callpath/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Callpath(Package):
     """Library for representing callpaths consistently in
        distributed-memory performance tools."""
diff --git a/var/spack/repos/builtin/packages/cantera/package.py b/var/spack/repos/builtin/packages/cantera/package.py
index 8e4f23046b..9c9c035325 100644
--- a/var/spack/repos/builtin/packages/cantera/package.py
+++ b/var/spack/repos/builtin/packages/cantera/package.py
@@ -35,11 +35,16 @@ class Cantera(Package):
 
     version('2.2.1', '9d1919bdef39ddec54485fc8a741a3aa')
 
-    variant('lapack',     default=True,  description='Build with external BLAS/LAPACK libraries')
-    variant('threadsafe', default=True,  description='Build threadsafe, requires Boost')
-    variant('sundials',   default=True,  description='Build with external Sundials')
-    variant('python',     default=False, description='Build the Cantera Python module')
-    variant('matlab',     default=False, description='Build the Cantera Matlab toolbox')
+    variant('lapack',     default=True,
+            description='Build with external BLAS/LAPACK libraries')
+    variant('threadsafe', default=True,
+            description='Build threadsafe, requires Boost')
+    variant('sundials',   default=True,
+            description='Build with external Sundials')
+    variant('python',     default=False,
+            description='Build the Cantera Python module')
+    variant('matlab',     default=False,
+            description='Build the Cantera Matlab toolbox')
 
     # Required dependencies
     depends_on('scons', type='build')
diff --git a/var/spack/repos/builtin/packages/cblas/package.py b/var/spack/repos/builtin/packages/cblas/package.py
index 0b85c5842a..0828141307 100644
--- a/var/spack/repos/builtin/packages/cblas/package.py
+++ b/var/spack/repos/builtin/packages/cblas/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class Cblas(Package):
     """The BLAS (Basic Linear Algebra Subprograms) are routines that
@@ -42,11 +42,11 @@ class Cblas(Package):
     def patch(self):
         mf = FileFilter('Makefile.in')
 
-        mf.filter('^BLLIB =.*', 'BLLIB = %s/libblas.a' % self.spec['blas'].prefix.lib)
+        mf.filter('^BLLIB =.*', 'BLLIB = %s/libblas.a' %
+                  self.spec['blas'].prefix.lib)
         mf.filter('^CC =.*', 'CC = cc')
         mf.filter('^FC =.*', 'FC = f90')
 
-
     def install(self, spec, prefix):
         make('all')
         mkdirp(prefix.lib)
@@ -54,6 +54,5 @@ def install(self, spec, prefix):
 
         # Rename the generated lib file to libcblas.a
         install('./lib/cblas_LINUX.a', '%s/libcblas.a' % prefix.lib)
-        install('./include/cblas.h','%s' % prefix.include)
-        install('./include/cblas_f77.h','%s' % prefix.include)
-
+        install('./include/cblas.h', '%s' % prefix.include)
+        install('./include/cblas_f77.h', '%s' % prefix.include)
diff --git a/var/spack/repos/builtin/packages/cbtf-argonavis/package.py b/var/spack/repos/builtin/packages/cbtf-argonavis/package.py
index 321d02b556..cbf36c3b61 100644
--- a/var/spack/repos/builtin/packages/cbtf-argonavis/package.py
+++ b/var/spack/repos/builtin/packages/cbtf-argonavis/package.py
@@ -22,7 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-################################################################################
+##########################################################################
 # Copyright (c) 2015-2016 Krell Institute. All Rights Reserved.
 #
 # This program is free software; you can redistribute it and/or modify it under
@@ -38,20 +38,24 @@
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 # Place, Suite 330, Boston, MA  02111-1307  USA
-################################################################################
+##########################################################################
 
 from spack import *
 
+
 class CbtfArgonavis(Package):
-    """CBTF Argo Navis project contains the CUDA collector and supporting 
-       libraries that was done as a result of a DOE SBIR grant."""
+    """CBTF Argo Navis project contains the CUDA collector and supporting
+       libraries that was done as a result of a DOE SBIR grant.
+
+    """
     homepage = "http://sourceforge.net/p/cbtf/wiki/Home/"
 
     # Mirror access template example
-    #url      = "file:/home/jeg/OpenSpeedShop_ROOT/SOURCES/cbtf-argonavis-1.6.tar.gz"
-    #version('1.6', '0fafa0008478405c2c2319450f174ed4')
+    # url = "file:/home/jeg/OpenSpeedShop_ROOT/SOURCES/cbtf-argonavis-1.6.tar.gz"
+    # version('1.6', '0fafa0008478405c2c2319450f174ed4')
 
-    version('1.6', branch='master', git='https://github.com/OpenSpeedShop/cbtf-argonavis.git')
+    version('1.6', branch='master',
+            git='https://github.com/OpenSpeedShop/cbtf-argonavis.git')
 
     depends_on("cmake@3.0.2", type='build')
     depends_on("boost@1.50.0:")
@@ -60,17 +64,19 @@ class CbtfArgonavis(Package):
     depends_on("cbtf")
     depends_on("cbtf-krell")
     depends_on("cuda@6.0.37")
-    #depends_on("cuda")
+    # depends_on("cuda")
 
     parallel = False
 
     def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
-        # Sets build type parameters into cmakeOptions the options that will enable the cbtf-krell built type settings
+        # Sets build type parameters into cmakeOptions the options that will
+        # enable the cbtf-krell built type settings
 
-        compile_flags="-O2 -g"
+        compile_flags = "-O2 -g"
         BuildTypeOptions = []
 
-        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the stdcmakeargs
+        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the
+        # stdcmakeargs
         for word in cmakeOptions[:]:
             if word.startswith('-DCMAKE_BUILD_TYPE'):
                 cmakeOptions.remove(word)
@@ -81,50 +87,54 @@ def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
             if word.startswith('-DCMAKE_VERBOSE_MAKEFILE'):
                 cmakeOptions.remove(word)
         BuildTypeOptions.extend([
-                 '-DCMAKE_VERBOSE_MAKEFILE=ON',
-                 '-DCMAKE_BUILD_TYPE=None',
-                 '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
-                 '-DCMAKE_C_FLAGS=%s'           % compile_flags
+            '-DCMAKE_VERBOSE_MAKEFILE=ON',
+            '-DCMAKE_BUILD_TYPE=None',
+            '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
+            '-DCMAKE_C_FLAGS=%s'           % compile_flags
         ])
 
         cmakeOptions.extend(BuildTypeOptions)
 
-
     def install(self, spec, prefix):
 
-       # Look for package installation information in the cbtf and cbtf-krell prefixes
-       cmake_prefix_path = join_path(spec['cbtf'].prefix) + ':' + join_path(spec['cbtf-krell'].prefix)
+        # Look for package installation information in the cbtf and cbtf-krell
+        # prefixes
+        cmake_prefix_path = join_path(
+            spec['cbtf'].prefix) + ':' + join_path(spec['cbtf-krell'].prefix)
 
-       with working_dir('CUDA'):
-         with working_dir('build', create=True):
+        with working_dir('CUDA'):
+            with working_dir('build', create=True):
 
-             cmakeOptions = []
-             cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                                  '-DCMAKE_PREFIX_PATH=%s'	% cmake_prefix_path,
-                                  '-DCUDA_DIR=%s'               % spec['cuda'].prefix,
-                                  '-DCUDA_INSTALL_PATH=%s'      % spec['cuda'].prefix,
-                                  '-DCUDA_TOOLKIT_ROOT_DIR=%s'  % spec['cuda'].prefix,
-                                  '-DCUPTI_DIR=%s'		% join_path(spec['cuda'].prefix + '/extras/CUPTI'),
-                                  '-DCUPTI_ROOT=%s'		% join_path(spec['cuda'].prefix + '/extras/CUPTI'),
-                                  '-DPAPI_ROOT=%s'		% spec['papi'].prefix,
-                                  '-DCBTF_DIR=%s'		% spec['cbtf'].prefix,
-                                  '-DCBTF_KRELL_DIR=%s'		% spec['cbtf-krell'].prefix,
-                                  '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-                                  '-DBoost_DIR=%s'		% spec['boost'].prefix,
-                                  '-DBOOST_LIBRARYDIR=%s'	% spec['boost'].prefix.lib,
-                                  '-DMRNET_DIR=%s'		% spec['mrnet'].prefix,
-                                  '-DBoost_NO_SYSTEM_PATHS=ON'
-                                 ])
+                cmakeOptions = []
+                cmakeOptions.extend(
+                    ['-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                     '-DCMAKE_PREFIX_PATH=%s' % cmake_prefix_path,
+                     '-DCUDA_DIR=%s' % spec['cuda'].prefix,
+                     '-DCUDA_INSTALL_PATH=%s' % spec['cuda'].prefix,
+                     '-DCUDA_TOOLKIT_ROOT_DIR=%s' % spec['cuda'].prefix,
+                     '-DCUPTI_DIR=%s' % join_path(
+                         spec['cuda'].prefix + '/extras/CUPTI'),
+                     '-DCUPTI_ROOT=%s' % join_path(
+                         spec['cuda'].prefix + '/extras/CUPTI'),
+                     '-DPAPI_ROOT=%s' % spec['papi'].prefix,
+                     '-DCBTF_DIR=%s' % spec['cbtf'].prefix,
+                     '-DCBTF_KRELL_DIR=%s' % spec['cbtf-krell'].prefix,
+                     '-DBOOST_ROOT=%s' % spec['boost'].prefix,
+                     '-DBoost_DIR=%s' % spec['boost'].prefix,
+                     '-DBOOST_LIBRARYDIR=%s' % spec['boost'].prefix.lib,
+                     '-DMRNET_DIR=%s' % spec['mrnet'].prefix,
+                     '-DBoost_NO_SYSTEM_PATHS=ON'])
 
-             # Add in the standard cmake arguments
-             cmakeOptions.extend(std_cmake_args)
+                # Add in the standard cmake arguments
+                cmakeOptions.extend(std_cmake_args)
 
-             # Adjust the standard cmake arguments to what we want the build type, etc to be
-             self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
-             
-             # Invoke cmake
-             cmake('..', *cmakeOptions)
+                # Adjust the standard cmake arguments to what we want the build
+                # type, etc to be
+                self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
 
-             make("clean")
-             make()
-             make("install")
+                # Invoke cmake
+                cmake('..', *cmakeOptions)
+
+                make("clean")
+                make()
+                make("install")
diff --git a/var/spack/repos/builtin/packages/cbtf-krell/package.py b/var/spack/repos/builtin/packages/cbtf-krell/package.py
index acb78a7395..6f15c3f835 100644
--- a/var/spack/repos/builtin/packages/cbtf-krell/package.py
+++ b/var/spack/repos/builtin/packages/cbtf-krell/package.py
@@ -22,7 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-################################################################################
+##########################################################################
 # Copyright (c) 2015-2016 Krell Institute. All Rights Reserved.
 #
 # This program is free software; you can redistribute it and/or modify it under
@@ -38,30 +38,40 @@
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 # Place, Suite 330, Boston, MA  02111-1307  USA
-################################################################################
+##########################################################################
 
 from spack import *
 
+
 class CbtfKrell(Package):
-    """CBTF Krell project contains the Krell Institute contributions to the CBTF project. 
-       These contributions include many performance data collectors and support 
-       libraries as well as some example tools that drive the data collection at 
-       HPC levels of scale."""
+    """CBTF Krell project contains the Krell Institute contributions to the
+       CBTF project.  These contributions include many performance data
+       collectors and support libraries as well as some example tools
+       that drive the data collection at HPC levels of scale.
+
+    """
     homepage = "http://sourceforge.net/p/cbtf/wiki/Home/"
 
     # optional mirror access template
-    #url      = "file:/home/jeg/cbtf-krell-1.6.tar.gz"
-    #version('1.6', 'edeb61cd488f16e7b124f77db9ce762d')
+    # url      = "file:/home/jeg/cbtf-krell-1.6.tar.gz"
+    # version('1.6', 'edeb61cd488f16e7b124f77db9ce762d')
 
-    version('1.6', branch='master', git='https://github.com/OpenSpeedShop/cbtf-krell.git')
+    version('1.6', branch='master',
+            git='https://github.com/OpenSpeedShop/cbtf-krell.git')
 
     # MPI variants
-    variant('openmpi', default=False, description="Build mpi experiment collector for openmpi MPI when this variant is enabled.")
-    variant('mpt', default=False, description="Build mpi experiment collector for SGI MPT MPI when this variant is enabled.")
-    variant('mvapich2', default=False, description="Build mpi experiment collector for mvapich2 MPI when this variant is enabled.")
-    variant('mvapich', default=False, description="Build mpi experiment collector for mvapich MPI when this variant is enabled.")
-    variant('mpich2', default=False, description="Build mpi experiment collector for mpich2 MPI when this variant is enabled.")
-    variant('mpich', default=False, description="Build mpi experiment collector for mpich MPI when this variant is enabled.")
+    variant('openmpi', default=False,
+            description="Build mpi experiment collector for openmpi MPI..")
+    variant('mpt', default=False,
+            description="Build mpi experiment collector for SGI MPT MPI.")
+    variant('mvapich2', default=False,
+            description="Build mpi experiment collector for mvapich2 MPI.")
+    variant('mvapich', default=False,
+            description="Build mpi experiment collector for mvapich MPI.")
+    variant('mpich2', default=False,
+            description="Build mpi experiment collector for mpich2 MPI.")
+    variant('mpich', default=False,
+            description="Build mpi experiment collector for mpich MPI.")
 
     # Dependencies for cbtf-krell
     depends_on("cmake@3.0.2", type='build')
@@ -83,7 +93,8 @@ class CbtfKrell(Package):
     depends_on("papi")
 
     # MPI Installations
-    # These have not worked either for build or execution, commenting out for now
+    # These have not worked either for build or execution, commenting out for
+    # now
     depends_on("openmpi", when='+openmpi')
     depends_on("mpich", when='+mpich')
     depends_on("mpich2", when='+mpich2')
@@ -94,11 +105,13 @@ class CbtfKrell(Package):
     parallel = False
 
     def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
-        # Sets build type parameters into cmakeOptions the options that will enable the cbtf-krell built type settings
- 
-        compile_flags="-O2 -g"
+        # Sets build type parameters into cmakeOptions the options that will
+        # enable the cbtf-krell built type settings
+
+        compile_flags = "-O2 -g"
         BuildTypeOptions = []
-        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the stdcmakeargs
+        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the
+        # stdcmakeargs
         for word in cmakeOptions[:]:
             if word.startswith('-DCMAKE_BUILD_TYPE'):
                 cmakeOptions.remove(word)
@@ -109,75 +122,76 @@ def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
             if word.startswith('-DCMAKE_VERBOSE_MAKEFILE'):
                 cmakeOptions.remove(word)
         BuildTypeOptions.extend([
-                 '-DCMAKE_VERBOSE_MAKEFILE=ON',
-                 '-DCMAKE_BUILD_TYPE=None',
-                 '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
-                 '-DCMAKE_C_FLAGS=%s'           % compile_flags
+            '-DCMAKE_VERBOSE_MAKEFILE=ON',
+            '-DCMAKE_BUILD_TYPE=None',
+            '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
+            '-DCMAKE_C_FLAGS=%s'           % compile_flags
         ])
 
         cmakeOptions.extend(BuildTypeOptions)
 
-
-
     def set_mpi_cmakeOptions(self, spec, cmakeOptions):
-        # Appends to cmakeOptions the options that will enable the appropriate MPI implementations
- 
+        # Appends to cmakeOptions the options that will enable the appropriate
+        # MPI implementations
+
         MPIOptions = []
 
         # openmpi
         if '+openmpi' in spec:
             MPIOptions.extend([
-                 '-DOPENMPI_DIR=%s' % spec['openmpi'].prefix
+                '-DOPENMPI_DIR=%s' % spec['openmpi'].prefix
             ])
         # mpich
         if '+mpich' in spec:
             MPIOptions.extend([
-                 '-DMPICH_DIR=%s' % spec['mpich'].prefix
+                '-DMPICH_DIR=%s' % spec['mpich'].prefix
             ])
         # mpich2
         if '+mpich2' in spec:
             MPIOptions.extend([
-                 '-DMPICH2_DIR=%s' % spec['mpich2'].prefix
+                '-DMPICH2_DIR=%s' % spec['mpich2'].prefix
             ])
         # mvapich
         if '+mvapich' in spec:
             MPIOptions.extend([
-                 '-DMVAPICH_DIR=%s' % spec['mvapich'].prefix
+                '-DMVAPICH_DIR=%s' % spec['mvapich'].prefix
             ])
         # mvapich2
         if '+mvapich2' in spec:
             MPIOptions.extend([
-                 '-DMVAPICH2_DIR=%s' % spec['mvapich2'].prefix
+                '-DMVAPICH2_DIR=%s' % spec['mvapich2'].prefix
             ])
         # mpt
         if '+mpt' in spec:
             MPIOptions.extend([
-                 '-DMPT_DIR=%s' % spec['mpt'].prefix
+                '-DMPT_DIR=%s' % spec['mpt'].prefix
             ])
 
         cmakeOptions.extend(MPIOptions)
 
     def install(self, spec, prefix):
 
-        # Add in paths for finding package config files that tell us where to find these packages
-        #cmake_prefix_path = join_path(spec['cbtf'].prefix) + ':' + join_path(spec['dyninst'].prefix)
-                                 #'-DCMAKE_PREFIX_PATH=%s'	% cmake_prefix_path
+        # Add in paths for finding package config files that tell us
+        # where to find these packages
+        # cmake_prefix_path = \
+        #     join_path(spec['cbtf'].prefix) + ':' + \
+        #     join_path(spec['dyninst'].prefix)
+        # '-DCMAKE_PREFIX_PATH=%s' % cmake_prefix_path
 
-        # Build cbtf-krell with cmake 
+        # Build cbtf-krell with cmake
         with working_dir('build_cbtf_krell', create=True):
             cmakeOptions = []
-            cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'	% prefix,
-                                 '-DCBTF_DIR=%s' 		% spec['cbtf'].prefix,
-                                 '-DBINUTILS_DIR=%s'		% spec['binutils'].prefix,
-                                 '-DLIBMONITOR_DIR=%s'		% spec['libmonitor'].prefix,
-                                 '-DLIBUNWIND_DIR=%s'		% spec['libunwind'].prefix,
-                                 '-DPAPI_DIR=%s'		% spec['papi'].prefix,
-                                 '-DBOOST_DIR=%s'		% spec['boost'].prefix,
-                                 '-DMRNET_DIR=%s'		% spec['mrnet'].prefix,
-                                 '-DDYNINST_DIR=%s'		% spec['dyninst'].prefix,
-                                 '-DXERCESC_DIR=%s'		% spec['xerces-c'].prefix
-                                ])
-
+            cmakeOptions.extend(
+                ['-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                 '-DCBTF_DIR=%s' % spec['cbtf'].prefix,
+                 '-DBINUTILS_DIR=%s' % spec['binutils'].prefix,
+                 '-DLIBMONITOR_DIR=%s' % spec['libmonitor'].prefix,
+                 '-DLIBUNWIND_DIR=%s' % spec['libunwind'].prefix,
+                 '-DPAPI_DIR=%s' % spec['papi'].prefix,
+                 '-DBOOST_DIR=%s' % spec['boost'].prefix,
+                 '-DMRNET_DIR=%s' % spec['mrnet'].prefix,
+                 '-DDYNINST_DIR=%s' % spec['dyninst'].prefix,
+                 '-DXERCESC_DIR=%s' % spec['xerces-c'].prefix])
 
             # Add any MPI implementations coming from variant settings
             self.set_mpi_cmakeOptions(spec, cmakeOptions)
@@ -185,9 +199,10 @@ def install(self, spec, prefix):
             # Add in the standard cmake arguments
             cmakeOptions.extend(std_cmake_args)
 
-            # Adjust the standard cmake arguments to what we want the build type, etc to be
+            # Adjust the standard cmake arguments to what we want the build
+            # type, etc to be
             self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
-             
+
             # Invoke cmake
             cmake('..', *cmakeOptions)
 
@@ -195,56 +210,54 @@ def install(self, spec, prefix):
             make()
             make("install")
 
-
-
-        #if '+cray' in spec:
-	#if 'cray' in self.spec.architecture:
+        # if '+cray' in spec:
+        # if 'cray' in self.spec.architecture:
         #    if '+runtime' in spec:
         #        with working_dir('build_cbtf_cray_runtime', create=True):
         #            python_vers='%d.%d' % spec['python'].version[:2]
         #            cmake .. \
-        #                    -DCMAKE_BUILD_TYPE=Debug \
-        #                    -DTARGET_OS="cray" \
-        #                    -DRUNTIME_ONLY="true" \
-        #                    -DCMAKE_INSTALL_PREFIX=${CBTF_KRELL_PREFIX} \
-        #                    -DCMAKE_PREFIX_PATH=${CBTF_ROOT} \
-        #                    -DCBTF_DIR=${CBTF_ROOT} \
-        #                    -DBOOST_ROOT=${BOOST_INSTALL_PREFIX} \
-        #                    -DXERCESC_DIR=${XERCESC_INSTALL_PREFIX} \
-        #                    -DBINUTILS_DIR=${KRELL_ROOT} \
-        #                    -DLIBMONITOR_DIR=${KRELL_ROOT_COMPUTE} \
-        #                    -DLIBUNWIND_DIR=${KRELL_ROOT_COMPUTE} \
-        #                    -DPAPI_DIR=${PAPI_ROOT} \
-        #                    -DDYNINST_DIR=${DYNINST_CN_ROOT} \
-        #                    -DMRNET_DIR=${MRNET_INSTALL_PREFIX} \
-        #                    -DMPICH2_DIR=/opt/cray/mpt/7.0.1/gni/mpich2-gnu/48
+        #                -DCMAKE_BUILD_TYPE=Debug \
+        #                -DTARGET_OS="cray" \
+        #                -DRUNTIME_ONLY="true" \
+        #                -DCMAKE_INSTALL_PREFIX=${CBTF_KRELL_PREFIX} \
+        #                -DCMAKE_PREFIX_PATH=${CBTF_ROOT} \
+        #                -DCBTF_DIR=${CBTF_ROOT} \
+        #                -DBOOST_ROOT=${BOOST_INSTALL_PREFIX} \
+        #                -DXERCESC_DIR=${XERCESC_INSTALL_PREFIX} \
+        #                -DBINUTILS_DIR=${KRELL_ROOT} \
+        #                -DLIBMONITOR_DIR=${KRELL_ROOT_COMPUTE} \
+        #                -DLIBUNWIND_DIR=${KRELL_ROOT_COMPUTE} \
+        #                -DPAPI_DIR=${PAPI_ROOT} \
+        #                -DDYNINST_DIR=${DYNINST_CN_ROOT} \
+        #                -DMRNET_DIR=${MRNET_INSTALL_PREFIX} \
+        #                -DMPICH2_DIR=/opt/cray/mpt/7.0.1/gni/mpich2-gnu/48
         #    else:
         #        with working_dir('build_cbtf_cray_frontend', create=True):
         #            python_vers='%d.%d' % spec['python'].version[:2]
         #            cmake .. \
-        #                    -DCMAKE_BUILD_TYPE=Debug \
-        #                    -DCMAKE_INSTALL_PREFIX=${CBTF_KRELL_PREFIX} \
-        #                    -DCMAKE_PREFIX_PATH=${CBTF_ROOT} \
-        #                    -DCBTF_DIR=${CBTF_ROOT} \
-        #                    -DRUNTIME_TARGET_OS="cray" \
-        #                    -DCBTF_KRELL_CN_RUNTIME_DIR=${CBTF_KRELL_CN_RUNTIME_ROOT} \
-        #                    -DCBTF_CN_RUNTIME_DIR=${CBTF_CN_RUNTIME_ROOT} \
-        #                    -DLIBMONITOR_CN_RUNTIME_DIR=${LIBMONITOR_CN_ROOT} \
-        #                    -DLIBUNWIND_CN_RUNTIME_DIR=${LIBUNWIND_CN_ROOT} \
-        #                    -DPAPI_CN_RUNTIME_DIR=${PAPI_CN_ROOT} \
-        #                    -DXERCESC_CN_RUNTIME_DIR=/${XERCESC_CN_ROOT} \
-        #                    -DMRNET_CN_RUNTIME_DIR=${MRNET_CN_ROOT} \
-        #                    -DBOOST_CN_RUNTIME_DIR=${BOOST_CN_ROOT} \
-        #                    -DDYNINST_CN_RUNTIME_DIR=${DYNINST_CN_ROOT} \
-        #                    -DBOOST_ROOT=/${KRELL_ROOT} \
-        #                    -DXERCESC_DIR=/${KRELL_ROOT} \
-        #                    -DBINUTILS_DIR=/${KRELL_ROOT} \
-        #                    -DLIBMONITOR_DIR=${KRELL_ROOT} \
-        #                    -DLIBUNWIND_DIR=${KRELL_ROOT} \
-        #                    -DPAPI_DIR=${PAPI_ROOT} \
-        #                    -DDYNINST_DIR=${KRELL_ROOT} \
-        #                    -DMRNET_DIR=${KRELL_ROOT} \
-        #                    -DMPICH2_DIR=/opt/cray/mpt/7.0.1/gni/mpich2-gnu/48
+        #            -DCMAKE_BUILD_TYPE=Debug \
+        #            -DCMAKE_INSTALL_PREFIX=${CBTF_KRELL_PREFIX} \
+        #            -DCMAKE_PREFIX_PATH=${CBTF_ROOT} \
+        #            -DCBTF_DIR=${CBTF_ROOT} \
+        #            -DRUNTIME_TARGET_OS="cray" \
+        #          -DCBTF_KRELL_CN_RUNTIME_DIR=${CBTF_KRELL_CN_RUNTIME_ROOT} \
+        #            -DCBTF_CN_RUNTIME_DIR=${CBTF_CN_RUNTIME_ROOT} \
+        #            -DLIBMONITOR_CN_RUNTIME_DIR=${LIBMONITOR_CN_ROOT} \
+        #            -DLIBUNWIND_CN_RUNTIME_DIR=${LIBUNWIND_CN_ROOT} \
+        #            -DPAPI_CN_RUNTIME_DIR=${PAPI_CN_ROOT} \
+        #            -DXERCESC_CN_RUNTIME_DIR=/${XERCESC_CN_ROOT} \
+        #            -DMRNET_CN_RUNTIME_DIR=${MRNET_CN_ROOT} \
+        #            -DBOOST_CN_RUNTIME_DIR=${BOOST_CN_ROOT} \
+        #            -DDYNINST_CN_RUNTIME_DIR=${DYNINST_CN_ROOT} \
+        #            -DBOOST_ROOT=/${KRELL_ROOT} \
+        #            -DXERCESC_DIR=/${KRELL_ROOT} \
+        #            -DBINUTILS_DIR=/${KRELL_ROOT} \
+        #            -DLIBMONITOR_DIR=${KRELL_ROOT} \
+        #            -DLIBUNWIND_DIR=${KRELL_ROOT} \
+        #            -DPAPI_DIR=${PAPI_ROOT} \
+        #            -DDYNINST_DIR=${KRELL_ROOT} \
+        #            -DMRNET_DIR=${KRELL_ROOT} \
+        #            -DMPICH2_DIR=/opt/cray/mpt/7.0.1/gni/mpich2-gnu/48
         #    fi
 #
 #                    make("clean")
@@ -264,22 +277,22 @@ def install(self, spec, prefix):
 #            fi
 #
 #        else:
-#            # Build cbtf-krell with cmake 
+#            # Build cbtf-krell with cmake
 #            with working_dir('build_cbtf_krell', create=True):
 #                cmake('..',
 #                      '-DCMAKE_BUILD_TYPE=Debug',
-#                      '-DCMAKE_INSTALL_PREFIX=%s'	% prefix,
-#                      '-DCBTF_DIR=%s' 			% spec['cbtf'].prefix,
-#                      '-DBINUTILS_DIR=%s'		% spec['binutils'].prefix,
-#                      '-DLIBMONITOR_DIR=%s'		% spec['libmonitor'].prefix,
-#                      '-DLIBUNWIND_DIR=%s'		% spec['libunwind'].prefix,
-#                      '-DPAPI_DIR=%s'			% spec['papi'].prefix,
-#                      '-DBOOST_DIR=%s'			% spec['boost'].prefix,
-#                      '-DMRNET_DIR=%s'			% spec['mrnet'].prefix,
-#                      '-DDYNINST_DIR=%s'		% spec['dyninst'].prefix,
-#                      '-DXERCESC_DIR=%s'		% spec['xerces-c'].prefix,
-#                      '-DOPENMPI_DIR=%s'		% openmpi_prefix_path,
-#                      '-DCMAKE_PREFIX_PATH=%s'		% cmake_prefix_path,
+#                      '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+#                      '-DCBTF_DIR=%s' % spec['cbtf'].prefix,
+#                      '-DBINUTILS_DIR=%s' % spec['binutils'].prefix,
+#                      '-DLIBMONITOR_DIR=%s' % spec['libmonitor'].prefix,
+#                      '-DLIBUNWIND_DIR=%s'% spec['libunwind'].prefix,
+#                      '-DPAPI_DIR=%s' % spec['papi'].prefix,
+#                      '-DBOOST_DIR=%s' % spec['boost'].prefix,
+#                      '-DMRNET_DIR=%s' % spec['mrnet'].prefix,
+#                      '-DDYNINST_DIR=%s' % spec['dyninst'].prefix,
+#                      '-DXERCESC_DIR=%s' % spec['xerces-c'].prefix,
+#                      '-DOPENMPI_DIR=%s' % openmpi_prefix_path,
+#                      '-DCMAKE_PREFIX_PATH=%s' % cmake_prefix_path,
 #                      *std_cmake_args)
 #
 #                make("clean")
diff --git a/var/spack/repos/builtin/packages/cbtf-lanl/package.py b/var/spack/repos/builtin/packages/cbtf-lanl/package.py
index 5694535fcc..b614a325f9 100644
--- a/var/spack/repos/builtin/packages/cbtf-lanl/package.py
+++ b/var/spack/repos/builtin/packages/cbtf-lanl/package.py
@@ -22,7 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-################################################################################
+##########################################################################
 # Copyright (c) 2015-2016 Krell Institute. All Rights Reserved.
 #
 # This program is free software; you can redistribute it and/or modify it under
@@ -38,20 +38,22 @@
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 # Place, Suite 330, Boston, MA  02111-1307  USA
-################################################################################
+##########################################################################
 
 from spack import *
 
+
 class CbtfLanl(Package):
-    """CBTF LANL project contains a memory tool and data center type system command monitoring tool."""
+    """CBTF LANL project contains a memory tool and data center type system
+       command monitoring tool."""
     homepage = "http://sourceforge.net/p/cbtf/wiki/Home/"
 
-
     # Mirror access template example
-    #url      = "file:/g/g24/jeg/cbtf-lanl-1.5.tar.gz"
-    #version('1.5', 'c3f78f967b0a42c6734ce4be0e602426')
+    # url      = "file:/g/g24/jeg/cbtf-lanl-1.5.tar.gz"
+    # version('1.5', 'c3f78f967b0a42c6734ce4be0e602426')
 
-    version('1.6', branch='master', git='http://git.code.sf.net/p/cbtf-lanl/cbtf-lanl')
+    version('1.6', branch='master',
+            git='http://git.code.sf.net/p/cbtf-lanl/cbtf-lanl')
 
     depends_on("cmake@3.0.2", type='build')
     # Dependencies for cbtf-krell
@@ -63,11 +65,13 @@ class CbtfLanl(Package):
     parallel = False
 
     def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
-        # Sets build type parameters into cmakeOptions the options that will enable the cbtf-krell built type settings
+        # Sets build type parameters into cmakeOptions the options that will
+        # enable the cbtf-krell built type settings
 
-        compile_flags="-O2 -g"
+        compile_flags = "-O2 -g"
         BuildTypeOptions = []
-        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the stdcmakeargs
+        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the
+        # stdcmakeargs
         for word in cmakeOptions[:]:
             if word.startswith('-DCMAKE_BUILD_TYPE'):
                 cmakeOptions.remove(word)
@@ -78,40 +82,43 @@ def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
             if word.startswith('-DCMAKE_VERBOSE_MAKEFILE'):
                 cmakeOptions.remove(word)
         BuildTypeOptions.extend([
-                 '-DCMAKE_VERBOSE_MAKEFILE=ON',
-                 '-DCMAKE_BUILD_TYPE=None',
-                 '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
-                 '-DCMAKE_C_FLAGS=%s'           % compile_flags
+            '-DCMAKE_VERBOSE_MAKEFILE=ON',
+            '-DCMAKE_BUILD_TYPE=None',
+            '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
+            '-DCMAKE_C_FLAGS=%s'           % compile_flags
         ])
 
         cmakeOptions.extend(BuildTypeOptions)
 
     def install(self, spec, prefix):
 
-     # Add in paths for finding package config files that tell us where to find these packages
-     cmake_prefix_path = join_path(spec['cbtf'].prefix) + ':' + join_path(spec['cbtf-krell'].prefix)
+        # Add in paths for finding package config files that tell us where to
+        # find these packages
+        cmake_prefix_path = join_path(
+            spec['cbtf'].prefix) + ':' + join_path(spec['cbtf-krell'].prefix)
 
-     with working_dir('build', create=True):
-         cmakeOptions = []
-         cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                              '-DCBTF_DIR=%s'               % spec['cbtf'].prefix,
-                              '-DCBTF_KRELL_DIR=%s'         % spec['cbtf-krell'].prefix,
-                              '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
-                              '-DXERCESC_DIR=%s'            % spec['xerces-c'].prefix,
-                              '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
-                              '-DCMAKE_MODULE_PATH=%s'      % join_path(prefix.share,'KrellInstitute','cmake')
-                             ])
+        with working_dir('build', create=True):
+            cmakeOptions = []
+            cmakeOptions.extend(
+                ['-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
+                 '-DCBTF_DIR=%s'               % spec['cbtf'].prefix,
+                 '-DCBTF_KRELL_DIR=%s'         % spec['cbtf-krell'].prefix,
+                 '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
+                 '-DXERCESC_DIR=%s'            % spec['xerces-c'].prefix,
+                 '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
+                 '-DCMAKE_MODULE_PATH=%s'      % join_path(
+                     prefix.share, 'KrellInstitute', 'cmake')])
 
-         # Add in the standard cmake arguments
-         cmakeOptions.extend(std_cmake_args)
+            # Add in the standard cmake arguments
+            cmakeOptions.extend(std_cmake_args)
 
-         # Adjust the standard cmake arguments to what we want the build type, etc to be
-         self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
-             
-         # Invoke cmake
-         cmake('..', *cmakeOptions)
+            # Adjust the standard cmake arguments to what we want the build
+            # type, etc to be
+            self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
 
-         make("clean")
-         make()
-         make("install")
+            # Invoke cmake
+            cmake('..', *cmakeOptions)
 
+            make("clean")
+            make()
+            make("install")
diff --git a/var/spack/repos/builtin/packages/cbtf/package.py b/var/spack/repos/builtin/packages/cbtf/package.py
index 017b897f3c..bc3116bf2a 100644
--- a/var/spack/repos/builtin/packages/cbtf/package.py
+++ b/var/spack/repos/builtin/packages/cbtf/package.py
@@ -22,7 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-################################################################################
+##########################################################################
 # Copyright (c) 2015-2016 Krell Institute. All Rights Reserved.
 #
 # This program is free software; you can redistribute it and/or modify it under
@@ -38,24 +38,30 @@
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 # Place, Suite 330, Boston, MA  02111-1307  USA
-################################################################################
+##########################################################################
 
 from spack import *
 
+
 class Cbtf(Package):
-    """CBTF project contains the base code for CBTF that supports creating components, 
-       component networks and the support to connect these components and component 
-       networks into sequential and distributed network tools."""
+    """CBTF project contains the base code for CBTF that supports creating
+       components, component networks and the support to connect these
+       components and component networks into sequential and distributed
+       network tools.
+
+    """
     homepage = "http://sourceforge.net/p/cbtf/wiki/Home"
 
     # Mirror access template example
-    #url      = "file:/home/jeg/cbtf-1.6.tar.gz"
-    #version('1.6', 'c1ef4e5aa4e470dffb042abdba0b9987')
+    # url      = "file:/home/jeg/cbtf-1.6.tar.gz"
+    # version('1.6', 'c1ef4e5aa4e470dffb042abdba0b9987')
 
     # Use when the git repository is available
-    version('1.6', branch='master', git='https://github.com/OpenSpeedShop/cbtf.git')
+    version('1.6', branch='master',
+            git='https://github.com/OpenSpeedShop/cbtf.git')
 
-    variant('runtime', default=False, description="build only the runtime libraries and collectors.")
+    variant('runtime', default=False,
+            description="build only the runtime libraries and collectors.")
 
     depends_on("cmake@3.0.2", type='build')
     depends_on("boost@1.50.0:")
@@ -67,11 +73,13 @@ class Cbtf(Package):
     parallel = False
 
     def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
-        # Sets build type parameters into cmakeOptions the options that will enable the cbtf-krell built type settings
- 
-        compile_flags="-O2 -g"
+        # Sets build type parameters into cmakeOptions the options that will
+        # enable the cbtf-krell built type settings
+
+        compile_flags = "-O2 -g"
         BuildTypeOptions = []
-        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the stdcmakeargs
+        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the
+        # stdcmakeargs
         for word in cmakeOptions[:]:
             if word.startswith('-DCMAKE_BUILD_TYPE'):
                 cmakeOptions.remove(word)
@@ -80,61 +88,66 @@ def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
             if word.startswith('-DCMAKE_C_FLAGS'):
                 cmakeOptions.remove(word)
         BuildTypeOptions.extend([
-                 '-DCMAKE_BUILD_TYPE=None',
-                 '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
-                 '-DCMAKE_C_FLAGS=%s'           % compile_flags
+            '-DCMAKE_BUILD_TYPE=None',
+            '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
+            '-DCMAKE_C_FLAGS=%s'           % compile_flags
         ])
 
         cmakeOptions.extend(BuildTypeOptions)
 
     def install(self, spec, prefix):
-      with working_dir('build', create=True):
+        with working_dir('build', create=True):
 
-          # Boost_NO_SYSTEM_PATHS  Set to TRUE to suppress searching   
-          # in system paths (or other locations outside of BOOST_ROOT
-          # or BOOST_INCLUDEDIR).  Useful when specifying BOOST_ROOT. 
-          # Defaults to OFF.
+            # Boost_NO_SYSTEM_PATHS  Set to TRUE to suppress searching
+            # in system paths (or other locations outside of BOOST_ROOT
+            # or BOOST_INCLUDEDIR).  Useful when specifying BOOST_ROOT.
+            # Defaults to OFF.
 
-          if '+runtime' in spec:
-              # Install message tag include file for use in Intel MIC cbtf-krell build
-              # FIXME
-              cmakeOptions = []
-              cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'	% prefix,
-                                   '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                                   '-DXERCESC_DIR=%s'         % spec['xerces-c'].prefix,
-                                   '-DBOOST_ROOT=%s'          % spec['boost'].prefix,
-                                   '-DMRNET_DIR=%s'           % spec['mrnet'].prefix,
-                                   '-DCMAKE_MODULE_PATH=%s'   % join_path(prefix.share,'KrellInstitute','cmake')
-                                  ])
+            if '+runtime' in spec:
+                # Install message tag include file for use in Intel MIC
+                # cbtf-krell build
+                # FIXME
+                cmakeOptions = []
+                cmakeOptions.extend(
+                    ['-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                     '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                     '-DXERCESC_DIR=%s'         % spec['xerces-c'].prefix,
+                     '-DBOOST_ROOT=%s'          % spec['boost'].prefix,
+                     '-DMRNET_DIR=%s'           % spec['mrnet'].prefix,
+                     '-DCMAKE_MODULE_PATH=%s'   % join_path(
+                         prefix.share, 'KrellInstitute', 'cmake')])
 
-              # Add in the standard cmake arguments
-              cmakeOptions.extend(std_cmake_args)
+                # Add in the standard cmake arguments
+                cmakeOptions.extend(std_cmake_args)
 
-              # Adjust the standard cmake arguments to what we want the build type, etc to be
-              self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
-             
-              # Invoke cmake
-              cmake('..', *cmakeOptions)
+                # Adjust the standard cmake arguments to what we want the build
+                # type, etc to be
+                self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
 
-          else:
-              cmakeOptions = []
-              cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'	% prefix,
-                                   '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                                   '-DXERCESC_DIR=%s'         % spec['xerces-c'].prefix,
-                                   '-DBOOST_ROOT=%s'          % spec['boost'].prefix,
-                                   '-DMRNET_DIR=%s'           % spec['mrnet'].prefix,
-                                   '-DCMAKE_MODULE_PATH=%s'   % join_path(prefix.share,'KrellInstitute','cmake')
-                                  ])
+                # Invoke cmake
+                cmake('..', *cmakeOptions)
 
-              # Add in the standard cmake arguments
-              cmakeOptions.extend(std_cmake_args)
+            else:
+                cmakeOptions = []
+                cmakeOptions.extend(
+                    ['-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                     '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                     '-DXERCESC_DIR=%s'         % spec['xerces-c'].prefix,
+                     '-DBOOST_ROOT=%s'          % spec['boost'].prefix,
+                     '-DMRNET_DIR=%s'           % spec['mrnet'].prefix,
+                     '-DCMAKE_MODULE_PATH=%s'   % join_path(
+                         prefix.share, 'KrellInstitute', 'cmake')])
 
-              # Adjust the standard cmake arguments to what we want the build type, etc to be
-              self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
-             
-              # Invoke cmake
-              cmake('..', *cmakeOptions)
+                # Add in the standard cmake arguments
+                cmakeOptions.extend(std_cmake_args)
 
-          make("clean")
-          make()
-          make("install")
+                # Adjust the standard cmake arguments to what we want the build
+                # type, etc to be
+                self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
+
+                # Invoke cmake
+                cmake('..', *cmakeOptions)
+
+            make("clean")
+            make()
+            make("install")
diff --git a/var/spack/repos/builtin/packages/cereal/package.py b/var/spack/repos/builtin/packages/cereal/package.py
index 41dc9a274b..716e0103d1 100644
--- a/var/spack/repos/builtin/packages/cereal/package.py
+++ b/var/spack/repos/builtin/packages/cereal/package.py
@@ -26,8 +26,16 @@
 import os
 import shutil
 
+
 class Cereal(Package):
-    """cereal is a header-only C++11 serialization library. cereal takes arbitrary data types and reversibly turns them into different representations, such as compact binary encodings, XML, or JSON. cereal was designed to be fast, light-weight, and easy to extend - it has no external dependencies and can be easily bundled with other code or used standalone."""
+    """cereal is a header-only C++11 serialization library. cereal takes
+       arbitrary data types and reversibly turns them into different
+       representations, such as compact binary encodings, XML, or
+       JSON. cereal was designed to be fast, light-weight, and easy to
+       extend - it has no external dependencies and can be easily bundled
+       with other code or used standalone.
+
+    """
     homepage = "http://uscilab.github.io/cereal/"
     url      = "https://github.com/USCiLab/cereal/archive/v1.1.2.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/cfitsio/package.py b/var/spack/repos/builtin/packages/cfitsio/package.py
index ed49ae5808..c68b3ffc0d 100644
--- a/var/spack/repos/builtin/packages/cfitsio/package.py
+++ b/var/spack/repos/builtin/packages/cfitsio/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cfitsio(Package):
     """
     CFITSIO is a library of C and Fortran subroutines for reading and writing
diff --git a/var/spack/repos/builtin/packages/cgal/package.py b/var/spack/repos/builtin/packages/cgal/package.py
index 5c87978339..e522b4a5a0 100644
--- a/var/spack/repos/builtin/packages/cgal/package.py
+++ b/var/spack/repos/builtin/packages/cgal/package.py
@@ -27,10 +27,12 @@
 
 
 class Cgal(Package):
-    """
-    CGAL is a software project that provides easy access to efficient and reliable geometric algorithms in the form of
-    a C++ library. CGAL is used in various areas needing geometric computation, such as geographic information systems,
-    computer aided design, molecular biology, medical imaging, computer graphics, and robotics.
+    """CGAL is a software project that provides easy access to efficient and
+       reliable geometric algorithms in the form of a C++ library. CGAL
+       is used in various areas needing geometric computation, such as
+       geographic information systems, computer aided design, molecular
+       biology, medical imaging, computer graphics, and robotics.
+
     """
     homepage = 'http://www.cgal.org/'
     url = 'https://github.com/CGAL/cgal/archive/releases/CGAL-4.7.tar.gz'
@@ -38,9 +40,12 @@ class Cgal(Package):
     version('4.7', '4826714810f3b4c65cac96b90fb03b67')
     version('4.6.3', 'e8ee2ecc8d2b09b94a121c09257b576d')
 
-    # Installation instructions : http://doc.cgal.org/latest/Manual/installation.html
-    variant('shared', default=True, description='Enables the build of shared libraries')
-    variant('debug', default=False, description='Builds a debug version of the libraries')
+    # Installation instructions :
+    # http://doc.cgal.org/latest/Manual/installation.html
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
+    variant('debug', default=False,
+            description='Builds a debug version of the libraries')
 
     depends_on('boost')
     depends_on('mpfr')
@@ -55,7 +60,8 @@ def install(self, spec, prefix):
 
         options = []
         options.extend(std_cmake_args)
-        # CGAL supports only Release and Debug build type. Any other build type will raise an error at configure time
+        # CGAL supports only Release and Debug build type. Any other build type
+        # will raise an error at configure time
         if '+debug' in spec:
             options.append('-DCMAKE_BUILD_TYPE:STRING=Debug')
         else:
diff --git a/var/spack/repos/builtin/packages/cgm/package.py b/var/spack/repos/builtin/packages/cgm/package.py
index c5da72d25a..5a998d471c 100644
--- a/var/spack/repos/builtin/packages/cgm/package.py
+++ b/var/spack/repos/builtin/packages/cgm/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cgm(Package):
     """The Common Geometry Module, Argonne (CGMA) is a code library
        which provides geometry functionality used for mesh generation and
@@ -33,7 +34,7 @@ class Cgm(Package):
 
     version('13.1.1', '4e8dbc4ba8f65767b29f985f7a23b01f')
     version('13.1.0', 'a6c7b22660f164ce893fb974f9cb2028')
-    version('13.1'  , '95f724bda04919fc76818a5b7bc0b4ed')
+    version('13.1', '95f724bda04919fc76818a5b7bc0b4ed')
 
     depends_on("mpi")
 
@@ -42,7 +43,6 @@ def patch(self):
                     '//\1',
                     'geom/parallel/CGMReadParallel.cpp')
 
-
     def install(self, spec, prefix):
         configure("--with-mpi",
                   "--prefix=%s" % prefix,
diff --git a/var/spack/repos/builtin/packages/cityhash/package.py b/var/spack/repos/builtin/packages/cityhash/package.py
index caa15780e3..d6d7f51558 100644
--- a/var/spack/repos/builtin/packages/cityhash/package.py
+++ b/var/spack/repos/builtin/packages/cityhash/package.py
@@ -25,16 +25,18 @@
 from spack import *
 from spack.util.environment import *
 
+
 class Cityhash(Package):
     homepage = "https://github.com/google/cityhash"
     url      = "https://github.com/google/cityhash"
 
-    version('2013-07-31', git='https://github.com/google/cityhash.git', commit='8af9b8c2b889d80c22d6bc26ba0df1afb79a30db')
-    version('master', branch='master', git='https://github.com/google/cityhash.git')
+    version('2013-07-31', git='https://github.com/google/cityhash.git',
+            commit='8af9b8c2b889d80c22d6bc26ba0df1afb79a30db')
+    version('master', branch='master',
+            git='https://github.com/google/cityhash.git')
 
     def install(self, spec, prefix):
         configure('--enable-sse4.2', '--prefix=%s' % prefix)
 
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/cleverleaf/package.py b/var/spack/repos/builtin/packages/cleverleaf/package.py
index c258e89514..61e6dca433 100644
--- a/var/spack/repos/builtin/packages/cleverleaf/package.py
+++ b/var/spack/repos/builtin/packages/cleverleaf/package.py
@@ -24,18 +24,21 @@
 ##############################################################################
 from spack import *
 
+
 class Cleverleaf(Package):
-    """
-    CleverLeaf is a hydrodynamics mini-app that extends CloverLeaf with Adaptive
-    Mesh Refinement using the SAMRAI toolkit from Lawrence Livermore National
-    Laboratory. The primary goal of CleverLeaf is to evaluate the application of
-    AMR to the Lagrangian-Eulerian hydrodynamics scheme used by CloverLeaf.
+    """CleverLeaf is a hydrodynamics mini-app that extends CloverLeaf with
+       Adaptive Mesh Refinement using the SAMRAI toolkit from Lawrence
+       Livermore National Laboratory. The primary goal of CleverLeaf is
+       to evaluate the application of AMR to the Lagrangian-Eulerian
+       hydrodynamics scheme used by CloverLeaf.
+
     """
 
     homepage = "http://uk-mac.github.io/CleverLeaf/"
     url      = "https://github.com/UK-MAC/CleverLeaf/tarball/master"
 
-    version('develop', git='https://github.com/UK-MAC/CleverLeaf_ref.git', branch='develop')
+    version('develop', git='https://github.com/UK-MAC/CleverLeaf_ref.git',
+            branch='develop')
 
     depends_on("SAMRAI@3.8.0:")
     depends_on("hdf5+mpi")
diff --git a/var/spack/repos/builtin/packages/cloog/package.py b/var/spack/repos/builtin/packages/cloog/package.py
index db3d2ac928..a979ae83fc 100644
--- a/var/spack/repos/builtin/packages/cloog/package.py
+++ b/var/spack/repos/builtin/packages/cloog/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cloog(Package):
     """CLooG is a free software and library to generate code for
     scanning Z-polyhedra. That is, it finds a code (e.g. in C,
diff --git a/var/spack/repos/builtin/packages/cmake/package.py b/var/spack/repos/builtin/packages/cmake/package.py
index bfb8764feb..90a7c20d19 100644
--- a/var/spack/repos/builtin/packages/cmake/package.py
+++ b/var/spack/repos/builtin/packages/cmake/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cmake(Package):
     """A cross-platform, open-source build system. CMake is a family of
        tools designed to build, test and package software."""
@@ -40,10 +41,13 @@ class Cmake(Package):
     version('3.0.2',    'db4c687a31444a929d2fdc36c4dfb95f')
     version('2.8.10.2', '097278785da7182ec0aea8769d06860c')
 
-    variant('ncurses', default=True, description='Enables the build of the ncurses gui')
-    variant('openssl', default=True, description="Enables CMake's OpenSSL features")
+    variant('ncurses', default=True,
+            description='Enables the build of the ncurses gui')
+    variant('openssl', default=True,
+            description="Enables CMake's OpenSSL features")
     variant('qt', default=False, description='Enables the build of cmake-gui')
-    variant('doc', default=False, description='Enables the generation of html and man page documentation')
+    variant('doc', default=False,
+            description='Enables the generation of html and man page docs')
 
     depends_on('ncurses', when='+ncurses')
     depends_on('openssl', when='+openssl')
@@ -53,7 +57,8 @@ class Cmake(Package):
 
     def url_for_version(self, version):
         """Handle CMake's version-based custom URLs."""
-        return 'https://cmake.org/files/v%s/cmake-%s.tar.gz' % (version.up_to(2), version)
+        return 'https://cmake.org/files/v%s/cmake-%s.tar.gz' % (
+            version.up_to(2), version)
 
     def validate(self, spec):
         """
diff --git a/var/spack/repos/builtin/packages/cmocka/package.py b/var/spack/repos/builtin/packages/cmocka/package.py
index aa2b3cc3bb..274b78379a 100644
--- a/var/spack/repos/builtin/packages/cmocka/package.py
+++ b/var/spack/repos/builtin/packages/cmocka/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cmocka(Package):
     """Unit-testing framework in pure C"""
     homepage = "https://cmocka.org/"
@@ -36,7 +37,7 @@ class Cmocka(Package):
 
     def install(self, spec, prefix):
         with working_dir('spack-build', create=True):
-	    cmake('..', *std_cmake_args)
+            cmake('..', *std_cmake_args)
 
-	    make()
-	    make("install")
+            make()
+            make("install")
diff --git a/var/spack/repos/builtin/packages/cnmem/package.py b/var/spack/repos/builtin/packages/cnmem/package.py
index f4c05f5b5f..0c62023952 100644
--- a/var/spack/repos/builtin/packages/cnmem/package.py
+++ b/var/spack/repos/builtin/packages/cnmem/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cnmem(Package):
     """CNMem mempool for CUDA devices"""
     homepage = "https://github.com/NVIDIA/cnmem"
@@ -31,6 +32,6 @@ class Cnmem(Package):
     version('git', git='https://github.com/NVIDIA/cnmem.git', branch="master")
 
     def install(self, spec, prefix):
-            cmake('.',*std_cmake_args)
-            make()
-            make('install')
+        cmake('.', *std_cmake_args)
+        make()
+        make('install')
diff --git a/var/spack/repos/builtin/packages/coreutils/package.py b/var/spack/repos/builtin/packages/coreutils/package.py
index cb8f596b41..94cfa11341 100644
--- a/var/spack/repos/builtin/packages/coreutils/package.py
+++ b/var/spack/repos/builtin/packages/coreutils/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Coreutils(Package):
     """The GNU Core Utilities are the basic file, shell and text
        manipulation utilities of the GNU operating system.  These are
diff --git a/var/spack/repos/builtin/packages/cppcheck/package.py b/var/spack/repos/builtin/packages/cppcheck/package.py
index 16f052ef2f..fd48fcb7e3 100644
--- a/var/spack/repos/builtin/packages/cppcheck/package.py
+++ b/var/spack/repos/builtin/packages/cppcheck/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cppcheck(Package):
     """A tool for static C/C++ code analysis."""
     homepage = "http://cppcheck.sourceforge.net/"
diff --git a/var/spack/repos/builtin/packages/cram/package.py b/var/spack/repos/builtin/packages/cram/package.py
index 283bc5adea..bef26cdcbd 100644
--- a/var/spack/repos/builtin/packages/cram/package.py
+++ b/var/spack/repos/builtin/packages/cram/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cram(Package):
     """Cram runs many small MPI jobs inside one large MPI job."""
     homepage = "https://github.com/llnl/cram"
diff --git a/var/spack/repos/builtin/packages/cryptopp/package.py b/var/spack/repos/builtin/packages/cryptopp/package.py
index 77895a7331..e9294a14a6 100644
--- a/var/spack/repos/builtin/packages/cryptopp/package.py
+++ b/var/spack/repos/builtin/packages/cryptopp/package.py
@@ -25,12 +25,15 @@
 import glob
 from spack import *
 
+
 class Cryptopp(Package):
     """Crypto++ is an open-source C++ library of cryptographic schemes. The
-       library supports a number of different cryptography algorithms, including
-       authenticated encryption schemes (GCM, CCM), hash functions (SHA-1, SHA2),
-       public-key encryption (RSA, DSA), and a few obsolete/historical encryption
-       algorithms (MD5, Panama)."""
+       library supports a number of different cryptography algorithms,
+       including authenticated encryption schemes (GCM, CCM), hash
+       functions (SHA-1, SHA2), public-key encryption (RSA, DSA), and a
+       few obsolete/historical encryption algorithms (MD5, Panama).
+
+    """
 
     homepage = "http://www.cryptopp.com"
     base_url = "http://www.cryptopp.com"
diff --git a/var/spack/repos/builtin/packages/cscope/package.py b/var/spack/repos/builtin/packages/cscope/package.py
index 88d522f486..f21226cce1 100644
--- a/var/spack/repos/builtin/packages/cscope/package.py
+++ b/var/spack/repos/builtin/packages/cscope/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Cscope(Package):
     """Cscope is a developer's tool for browsing source code."""
     homepage = "http://http://cscope.sourceforge.net/"
diff --git a/var/spack/repos/builtin/packages/cuda/package.py b/var/spack/repos/builtin/packages/cuda/package.py
index 96694670ad..558535bec6 100644
--- a/var/spack/repos/builtin/packages/cuda/package.py
+++ b/var/spack/repos/builtin/packages/cuda/package.py
@@ -26,22 +26,27 @@
 from glob import glob
 import os
 
+
 class Cuda(Package):
-    """CUDA is a parallel computing platform and programming model invented by
-    NVIDIA. It enables dramatic increases in computing performance by harnessing
-    the power of the graphics processing unit (GPU).
+    """CUDA is a parallel computing platform and programming model invented
+    by NVIDIA. It enables dramatic increases in computing performance by
+    harnessing the power of the graphics processing unit (GPU).
 
-    Note: NVIDIA does not provide a download URL for CUDA so you will need to
-    download it yourself. Go to https://developer.nvidia.com/cuda-downloads
-    and select your Operating System, Architecture, Distribution, and Version.
-    For the Installer Type, select runfile and click Download. Spack will search
-    your current directory for this file. Alternatively, add this file to a
-    mirror so that Spack can find it. For instructions on how to set up a mirror,
-    see http://software.llnl.gov/spack/mirrors.html
+    Note: NVIDIA does not provide a download URL for CUDA so you will
+    need to download it yourself. Go to
+    https://developer.nvidia.com/cuda-downloads and select your Operating
+    System, Architecture, Distribution, and Version.  For the Installer
+    Type, select runfile and click Download. Spack will search your
+    current directory for this file. Alternatively, add this file to a
+    mirror so that Spack can find it. For instructions on how to set up a
+    mirror, see http://software.llnl.gov/spack/mirrors.html
 
-    Note: This package does not currently install the drivers necessary to run
-    CUDA. These will need to be installed manually. See:
-    http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux for details."""
+    Note: This package does not currently install the drivers necessary
+    to run CUDA. These will need to be installed manually. See:
+    http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux for
+    details.
+
+    """
 
     homepage = "http://www.nvidia.com/object/cuda_home_new.html"
 
@@ -50,15 +55,15 @@ class Cuda(Package):
     version('6.5.14', '90b1b8f77313600cc294d9271741f4da', expand=False,
             url="file://%s/cuda_6.5.14_linux_64.run" % os.getcwd())
 
-
     def install(self, spec, prefix):
         runfile = glob(os.path.join(self.stage.path, 'cuda*.run'))[0]
         chmod = which('chmod')
         chmod('+x', runfile)
         runfile = which(runfile)
 
-        # Note: NVIDIA does not officially support many newer versions of compilers.
-        # For example, on CentOS 6, you must use GCC 4.4.7 or older. See:
+        # Note: NVIDIA does not officially support many newer versions of
+        # compilers.  For example, on CentOS 6, you must use GCC 4.4.7 or
+        # older. See:
         # http://docs.nvidia.com/cuda/cuda-installation-guide-linux/#system-requirements
         # for details.
 
@@ -68,4 +73,3 @@ def install(self, spec, prefix):
             '--toolkit',  # install CUDA Toolkit
             '--toolkitpath=%s' % prefix
         )
-
diff --git a/var/spack/repos/builtin/packages/czmq/package.py b/var/spack/repos/builtin/packages/czmq/package.py
index a251a94470..ef6374619b 100644
--- a/var/spack/repos/builtin/packages/czmq/package.py
+++ b/var/spack/repos/builtin/packages/czmq/package.py
@@ -25,12 +25,14 @@
 from spack import *
 import os
 
+
 class Czmq(Package):
     """ A C interface to the ZMQ library """
     homepage = "http://czmq.zeromq.org"
     url      = "https://github.com/zeromq/czmq/archive/v3.0.2.tar.gz"
 
-    version('3.0.2', '23e9885f7ee3ce88d99d0425f52e9be1', url='https://github.com/zeromq/czmq/archive/v3.0.2.tar.gz')
+    version('3.0.2', '23e9885f7ee3ce88d99d0425f52e9be1',
+            url='https://github.com/zeromq/czmq/archive/v3.0.2.tar.gz')
 
     depends_on('libtool', type='build')
     depends_on('automake', type='build')
@@ -39,19 +41,21 @@ class Czmq(Package):
     depends_on('zeromq')
 
     def install(self, spec, prefix):
-        bash = which("bash")
         # Work around autogen.sh oddities
+        # bash = which("bash")
         # bash("./autogen.sh")
         mkdirp("config")
         autoreconf = which("autoreconf")
         autoreconf("--install", "--verbose", "--force",
-        "-I", "config",
-        "-I", os.path.join(spec['pkg-config'].prefix, "share", "aclocal"),
-        "-I", os.path.join(spec['automake'].prefix, "share", "aclocal"),
-        "-I", os.path.join(spec['libtool'].prefix, "share", "aclocal"),
-        )
+                   "-I", "config",
+                   "-I", os.path.join(spec['pkg-config'].prefix,
+                                      "share", "aclocal"),
+                   "-I", os.path.join(spec['automake'].prefix,
+                                      "share", "aclocal"),
+                   "-I", os.path.join(spec['libtool'].prefix,
+                                      "share", "aclocal"),
+                   )
         configure("--prefix=%s" % prefix)
 
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/dakota/package.py b/var/spack/repos/builtin/packages/dakota/package.py
index d0d22d9728..e8f7d0889b 100644
--- a/var/spack/repos/builtin/packages/dakota/package.py
+++ b/var/spack/repos/builtin/packages/dakota/package.py
@@ -26,17 +26,22 @@
 
 
 class Dakota(Package):
-    """
-    The Dakota toolkit provides a flexible, extensible interface between analysis codes and iterative systems
-    analysis methods. Dakota contains algorithms for:
+    """The Dakota toolkit provides a flexible, extensible interface between
+    analysis codes and iterative systems analysis methods. Dakota
+    contains algorithms for:
 
     - optimization with gradient and non gradient-based methods;
-    - uncertainty quantification with sampling, reliability, stochastic expansion, and epistemic methods;
+    - uncertainty quantification with sampling, reliability, stochastic
+    - expansion, and epistemic methods;
     - parameter estimation with nonlinear least squares methods;
-    - sensitivity/variance analysis with design of experiments and parameter study methods.
+    - sensitivity/variance analysis with design of experiments and
+    - parameter study methods.
+
+    These capabilities may be used on their own or as components within
+    advanced strategies such as hybrid optimization, surrogate-based
+    optimization, mixed integer nonlinear programming, or optimization
+    under uncertainty.
 
-    These capabilities may be used on their own or as components within advanced strategies such as hybrid optimization,
-    surrogate-based optimization, mixed integer nonlinear programming, or optimization under uncertainty.
     """
 
     homepage = 'https://dakota.sandia.gov/'
@@ -45,8 +50,10 @@ class Dakota(Package):
 
     version('6.3', '05a58d209fae604af234c894c3f73f6d')
 
-    variant('debug', default=False, description='Builds a debug version of the libraries')
-    variant('shared', default=True, description='Enables the build of shared libraries')
+    variant('debug', default=False,
+            description='Builds a debug version of the libraries')
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
     variant('mpi', default=True, description='Activates MPI support')
 
     depends_on('blas')
@@ -64,12 +71,17 @@ def install(self, spec, prefix):
         options = []
         options.extend(std_cmake_args)
 
-        options.extend(['-DCMAKE_BUILD_TYPE:STRING=%s' % ('Debug' if '+debug' in spec else 'Release'),
-                        '-DBUILD_SHARED_LIBS:BOOL=%s' % ('ON' if '+shared' in spec else 'OFF')])
+        options.extend([
+            '-DCMAKE_BUILD_TYPE:STRING=%s' % (
+                'Debug' if '+debug' in spec else 'Release'),
+            '-DBUILD_SHARED_LIBS:BOOL=%s' % (
+                'ON' if '+shared' in spec else 'OFF')])
 
         if '+mpi' in spec:
-            options.extend(['-DDAKOTA_HAVE_MPI:BOOL=ON',
-                            '-DMPI_CXX_COMPILER:STRING=%s' % join_path(spec['mpi'].prefix.bin, 'mpicxx')])
+            options.extend([
+                '-DDAKOTA_HAVE_MPI:BOOL=ON',
+                '-DMPI_CXX_COMPILER:STRING=%s' % join_path(
+                    spec['mpi'].prefix.bin, 'mpicxx')])
 
         build_directory = join_path(self.stage.path, 'spack-build')
         source_directory = self.stage.source_path
diff --git a/var/spack/repos/builtin/packages/damselfly/package.py b/var/spack/repos/builtin/packages/damselfly/package.py
index 427997072c..a37728c92b 100644
--- a/var/spack/repos/builtin/packages/damselfly/package.py
+++ b/var/spack/repos/builtin/packages/damselfly/package.py
@@ -24,17 +24,19 @@
 ##############################################################################
 from spack import *
 
+
 class Damselfly(Package):
     """Damselfly is a model-based parallel network simulator."""
     homepage = "https://github.com/llnl/damselfly"
     url      = "https://github.com/llnl/damselfly"
 
-    version('1.0', '05cf7e2d8ece4408c0f2abb7ab63fd74c0d62895', git='https://github.com/llnl/damselfly.git', tag='v1.0')
+    version('1.0', '05cf7e2d8ece4408c0f2abb7ab63fd74c0d62895',
+            git='https://github.com/llnl/damselfly.git', tag='v1.0')
 
     depends_on('cmake', type='build')
 
     def install(self, spec, prefix):
         with working_dir('spack-build', create=True):
-	    cmake('-DCMAKE_BUILD_TYPE=release', '..', *std_cmake_args)
-	    make()
-	    make('install')
+            cmake('-DCMAKE_BUILD_TYPE=release', '..', *std_cmake_args)
+            make()
+            make('install')
diff --git a/var/spack/repos/builtin/packages/dbus/package.py b/var/spack/repos/builtin/packages/dbus/package.py
index 130ba2ea1f..fdca68f53f 100644
--- a/var/spack/repos/builtin/packages/dbus/package.py
+++ b/var/spack/repos/builtin/packages/dbus/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Dbus(Package):
     """D-Bus is a message bus system, a simple way for applications to
        talk to one another. D-Bus supplies both a system daemon (for
diff --git a/var/spack/repos/builtin/packages/dealii/package.py b/var/spack/repos/builtin/packages/dealii/package.py
index 18c0849f68..1411494c6f 100644
--- a/var/spack/repos/builtin/packages/dealii/package.py
+++ b/var/spack/repos/builtin/packages/dealii/package.py
@@ -40,18 +40,27 @@ class Dealii(Package):
     version('develop', git='https://github.com/dealii/dealii.git')
 
     variant('mpi',      default=True,  description='Compile with MPI')
-    variant('arpack',   default=True,  description='Compile with Arpack and PArpack (only with MPI)')
-    variant('doc',      default=False, description='Compile with documentation')
+    variant('arpack',   default=True,
+            description='Compile with Arpack and PArpack (only with MPI)')
+    variant('doc',      default=False,
+            description='Compile with documentation')
     variant('gsl',      default=True,  description='Compile with GSL')
-    variant('hdf5',     default=True,  description='Compile with HDF5 (only with MPI)')
+    variant('hdf5',     default=True,
+            description='Compile with HDF5 (only with MPI)')
     variant('metis',    default=True,  description='Compile with Metis')
-    variant('netcdf',   default=True,  description='Compile with Netcdf (only with MPI)')
+    variant('netcdf',   default=True,
+            description='Compile with Netcdf (only with MPI)')
     variant('oce',      default=True,  description='Compile with OCE')
-    variant('p4est',    default=True,  description='Compile with P4est (only with MPI)')
-    variant('petsc',    default=True,  description='Compile with Petsc (only with MPI)')
-    variant('slepc',    default=True,  description='Compile with Slepc (only with Petsc and MPI)')
-    variant('trilinos', default=True,  description='Compile with Trilinos (only with MPI)')
-    variant('python',   default=True,  description='Compile with Python bindings')
+    variant('p4est',    default=True,
+            description='Compile with P4est (only with MPI)')
+    variant('petsc',    default=True,
+            description='Compile with Petsc (only with MPI)')
+    variant('slepc',    default=True,
+            description='Compile with Slepc (only with Petsc and MPI)')
+    variant('trilinos', default=True,
+            description='Compile with Trilinos (only with MPI)')
+    variant('python',   default=True,
+            description='Compile with Python bindings')
 
     # required dependencies, light version
     depends_on("blas")
@@ -59,13 +68,20 @@ class Dealii(Package):
     # https://github.com/dealii/dealii/issues/1591
     # Require at least 1.59
     # +python won't affect @:8.4.1
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams",            when='@:8.4.1~mpi')
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+mpi",        when='@:8.4.1+mpi')
+    depends_on("boost@1.59.0:+thread+system+serialization+iostreams",
+               when='@:8.4.1~mpi')
+    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+mpi",
+               when='@:8.4.1+mpi')
     # since @8.5.0: (and @develop) python bindings are introduced:
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams",            when='@8.5.0:~mpi~python')
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+mpi",        when='@8.5.0:+mpi~python')
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+python",     when='@8.5.0:~mpi+python')
-    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+mpi+python", when='@8.5.0:+mpi+python')
+    depends_on("boost@1.59.0:+thread+system+serialization+iostreams",
+               when='@8.5.0:~mpi~python')
+    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+mpi",
+               when='@8.5.0:+mpi~python')
+    depends_on("boost@1.59.0:+thread+system+serialization+iostreams+python",
+               when='@8.5.0:~mpi+python')
+    depends_on(
+        "boost@1.59.0:+thread+system+serialization+iostreams+mpi+python",
+        when='@8.5.0:+mpi+python')
     depends_on("bzip2")
     depends_on("cmake", type='build')
     depends_on("lapack")
diff --git a/var/spack/repos/builtin/packages/dia/package.py b/var/spack/repos/builtin/packages/dia/package.py
index 1685f0009f..94cd75656d 100644
--- a/var/spack/repos/builtin/packages/dia/package.py
+++ b/var/spack/repos/builtin/packages/dia/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Dia(Package):
     """Dia is a program for drawing structured diagrams."""
     homepage  = 'https://wiki.gnome.org/Apps/Dia'
@@ -34,7 +35,7 @@ class Dia(Package):
     depends_on('intltool', type='build')
     depends_on('gtkplus@2.6.0:')
     depends_on('cairo')
-    #depends_on('libart') # optional dependency, not yet supported by spack.
+    # depends_on('libart') # optional dependency, not yet supported by spack.
     depends_on('libpng')
     depends_on('libxslt')
     depends_on('python')
diff --git a/var/spack/repos/builtin/packages/doxygen/package.py b/var/spack/repos/builtin/packages/doxygen/package.py
index 267ba61756..f29110ac1d 100644
--- a/var/spack/repos/builtin/packages/doxygen/package.py
+++ b/var/spack/repos/builtin/packages/doxygen/package.py
@@ -24,8 +24,6 @@
 ##############################################################################
 from spack import *
 
-import sys
-
 
 class Doxygen(Package):
     """Doxygen is the de facto standard tool for generating documentation
@@ -41,7 +39,8 @@ class Doxygen(Package):
     version('1.8.10', '79767ccd986f12a0f949015efb5f058f')
 
     # graphviz appears to be a run-time optional dependency
-    variant('graphviz', default=True, description='Build with dot command support from Graphviz.')  # NOQA: ignore=E501
+    variant('graphviz', default=True,
+            description='Build with dot command support from Graphviz.')
 
     depends_on("cmake@2.8.12:", type='build')
     depends_on("flex", type='build')
diff --git a/var/spack/repos/builtin/packages/dri2proto/package.py b/var/spack/repos/builtin/packages/dri2proto/package.py
index 25ea783c0c..65b86714f1 100644
--- a/var/spack/repos/builtin/packages/dri2proto/package.py
+++ b/var/spack/repos/builtin/packages/dri2proto/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Dri2proto(Package):
     """DRI2 Protocol Headers."""
     homepage = "http://http://cgit.freedesktop.org/xorg/proto/dri2proto/"
diff --git a/var/spack/repos/builtin/packages/dtcmp/package.py b/var/spack/repos/builtin/packages/dtcmp/package.py
index b50b2ae3ae..e59e246d47 100644
--- a/var/spack/repos/builtin/packages/dtcmp/package.py
+++ b/var/spack/repos/builtin/packages/dtcmp/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Dtcmp(Package):
     """The Datatype Comparison Library provides comparison operations and
        parallel sort algorithms for MPI applications."""
diff --git a/var/spack/repos/builtin/packages/dyninst/package.py b/var/spack/repos/builtin/packages/dyninst/package.py
index efe4de4abf..90c83bdc3a 100644
--- a/var/spack/repos/builtin/packages/dyninst/package.py
+++ b/var/spack/repos/builtin/packages/dyninst/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Dyninst(Package):
     """API for dynamic binary instrumentation.  Modify programs while they
     are executing without recompiling, re-linking, or re-executing."""
@@ -55,16 +56,18 @@ def install(self, spec, prefix):
                   '-DBoost_INCLUDE_DIR=%s'    % spec['boost'].prefix.include,
                   '-DBoost_LIBRARY_DIR=%s'    % spec['boost'].prefix.lib,
                   '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                  '-DLIBELF_INCLUDE_DIR=%s'   % join_path(libelf.include, 'libelf'),
-                  '-DLIBELF_LIBRARIES=%s'     % join_path(libelf.lib, 'libelf.so'),
+                  '-DLIBELF_INCLUDE_DIR=%s'   % join_path(
+                      libelf.include, 'libelf'),
+                  '-DLIBELF_LIBRARIES=%s'     % join_path(
+                      libelf.lib, 'libelf.so'),
                   '-DLIBDWARF_INCLUDE_DIR=%s' % libdwarf.include,
-                  '-DLIBDWARF_LIBRARIES=%s'   % join_path(libdwarf.lib, 'libdwarf.so'),
+                  '-DLIBDWARF_LIBRARIES=%s'   % join_path(
+                      libdwarf.lib, 'libdwarf.so'),
                   *std_cmake_args)
 
             make()
             make("install")
 
-
     @when('@:8.1')
     def install(self, spec, prefix):
         configure("--prefix=" + prefix)
diff --git a/var/spack/repos/builtin/packages/eigen/package.py b/var/spack/repos/builtin/packages/eigen/package.py
index 97343f499b..36d6850c1a 100644
--- a/var/spack/repos/builtin/packages/eigen/package.py
+++ b/var/spack/repos/builtin/packages/eigen/package.py
@@ -22,7 +22,6 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-
 from spack import *
 
 
@@ -36,15 +35,19 @@ class Eigen(Package):
     homepage = 'http://eigen.tuxfamily.org/'
     url = 'http://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2'
 
-    version('3.2.7', 'cc1bacbad97558b97da6b77c9644f184', url='http://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2')
+    version('3.2.7', 'cc1bacbad97558b97da6b77c9644f184',
+            url='http://bitbucket.org/eigen/eigen/get/3.2.7.tar.bz2')
 
-    variant('debug', default=False, description='Builds the library in debug mode')
+    variant('debug', default=False,
+            description='Builds the library in debug mode')
 
     variant('metis', default=True, description='Enables metis backend')
     variant('scotch', default=True, description='Enables scotch backend')
     variant('fftw', default=True, description='Enables FFTW backend')
-    variant('suitesparse', default=True, description='Enables SuiteSparse support')
-    variant('mpfr', default=True, description='Enables support for multi-precisions floating points via mpfr')
+    variant('suitesparse', default=True,
+            description='Enables SuiteSparse support')
+    variant('mpfr', default=True,
+            description='Enables support for multi-precisions FP via mpfr')
 
     # TODO : dependency on googlehash, superlu, adolc missing
     depends_on('cmake', type='build')
diff --git a/var/spack/repos/builtin/packages/elfutils/package.py b/var/spack/repos/builtin/packages/elfutils/package.py
index ecb5759ddc..ef8c2433c9 100644
--- a/var/spack/repos/builtin/packages/elfutils/package.py
+++ b/var/spack/repos/builtin/packages/elfutils/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Elfutils(Package):
     """elfutils is a collection of various binary tools such as
     eu-objdump, eu-readelf, and other utilities that allow you to
@@ -47,4 +48,3 @@ def install(self, spec, prefix):
         configure('--prefix=%s' % prefix, '--enable-maintainer-mode')
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/elpa/package.py b/var/spack/repos/builtin/packages/elpa/package.py
index ae81422495..f28d63f6c3 100644
--- a/var/spack/repos/builtin/packages/elpa/package.py
+++ b/var/spack/repos/builtin/packages/elpa/package.py
@@ -34,7 +34,8 @@ class Elpa(Package):
     homepage = 'http://elpa.mpcdf.mpg.de/'
     url = 'http://elpa.mpcdf.mpg.de/elpa-2015.11.001.tar.gz'
 
-    version('2015.11.001', 'de0f35b7ee7c971fd0dca35c900b87e6', url='http://elpa.mpcdf.mpg.de/elpa-2015.11.001.tar.gz')
+    version('2015.11.001', 'de0f35b7ee7c971fd0dca35c900b87e6',
+            url='http://elpa.mpcdf.mpg.de/elpa-2015.11.001.tar.gz')
 
     variant('openmp', default=False, description='Activates OpenMP support')
 
diff --git a/var/spack/repos/builtin/packages/emacs/package.py b/var/spack/repos/builtin/packages/emacs/package.py
index a9ebd6d42f..94d42a3c9f 100644
--- a/var/spack/repos/builtin/packages/emacs/package.py
+++ b/var/spack/repos/builtin/packages/emacs/package.py
@@ -35,7 +35,8 @@ class Emacs(Package):
     version('24.5', 'd74b597503a68105e61b5b9f6d065b44')
 
     variant('X', default=True, description="Enable a X toolkit (GTK+)")
-    variant('gtkplus', default=False, description="Enable a GTK+ as X toolkit (this variant is ignored if ~X)")
+    variant('gtkplus', default=False,
+            description="Enable a GTK+ as X toolkit (ignored if ~X)")
 
     depends_on('ncurses')
     depends_on('libtiff', when='+X')
diff --git a/var/spack/repos/builtin/packages/environment-modules/package.py b/var/spack/repos/builtin/packages/environment-modules/package.py
index 5d5bb3be02..85594bab47 100644
--- a/var/spack/repos/builtin/packages/environment-modules/package.py
+++ b/var/spack/repos/builtin/packages/environment-modules/package.py
@@ -46,17 +46,18 @@ def install(self, spec, prefix):
             "--without-tclx",
             "--with-tclx-ver=0.0",
             "--prefix=%s" % prefix,
-            "--with-tcl=%s" % join_path(tcl_spec.prefix, 'lib'),    # It looks for tclConfig.sh
-            "--with-tcl-ver=%d.%d" % (tcl_spec.version.version[0], tcl_spec.version.version[1]),
+            # It looks for tclConfig.sh
+            "--with-tcl=%s" % join_path(tcl_spec.prefix, 'lib'),
+            "--with-tcl-ver=%d.%d" % (tcl_spec.version.version[
+                                      0], tcl_spec.version.version[1]),
             '--disable-debug',
             '--disable-dependency-tracking',
             '--disable-silent-rules',
-            '--disable-versioning', 
+            '--disable-versioning',
             '--datarootdir=%s' % prefix.share,
             'CPPFLAGS=%s' % ' '.join(CPPFLAGS)
         ]
 
-
         configure(*config_args)
         make()
         make('install')
diff --git a/var/spack/repos/builtin/packages/exodusii/package.py b/var/spack/repos/builtin/packages/exodusii/package.py
index eb6c23afeb..15fe1e89a6 100644
--- a/var/spack/repos/builtin/packages/exodusii/package.py
+++ b/var/spack/repos/builtin/packages/exodusii/package.py
@@ -32,17 +32,22 @@
 # TODO: Create installation options for NetCDF that support larger page size
 # TODO: suggested by Exodus (see the repository "README" file).
 
+
 class Exodusii(Package):
-    """Exodus II is a C++/Fortran library developed to store and retrieve data for
-       finite element analyses. It's used for preprocessing (problem definition),
-       postprocessing (results visualization), and data transfer between codes.
-       An Exodus II data file is a random access, machine independent, binary
-       file that is written and read via C, C++, or Fortran API routines."""
+    """Exodus II is a C++/Fortran library developed to store and retrieve
+       data for finite element analyses. It's used for preprocessing
+       (problem definition), postprocessing (results visualization), and
+       data transfer between codes.  An Exodus II data file is a random
+       access, machine independent, binary file that is written and read
+       via C, C++, or Fortran API routines.
+
+    """
 
     homepage = "https://github.com/gsjaardema/seacas"
     url      = "https://github.com/gsjaardema/seacas/archive/master.zip"
 
-    version('2016-02-08', git='https://github.com/gsjaardema/seacas.git', commit='dcf3529')
+    version('2016-02-08',
+            git='https://github.com/gsjaardema/seacas.git', commit='dcf3529')
 
     depends_on('cmake@2.8.7:', type='build')
     depends_on('hdf5~shared~mpi')
@@ -54,11 +59,14 @@ def patch(self):
         ff = FileFilter('cmake-exodus')
 
         ff.filter('CMAKE_INSTALL_PREFIX:PATH=${ACCESS}',
-            'CMAKE_INSTALL_PREFIX:PATH=%s' % self.spec.prefix, string=True)
+                  'CMAKE_INSTALL_PREFIX:PATH=%s' % self.spec.prefix,
+                  string=True)
         ff.filter('NetCDF_DIR:PATH=${TPL}',
-            'NetCDF_DIR:PATH=%s' % self.spec['netcdf'].prefix, string=True)
+                  'NetCDF_DIR:PATH=%s' % self.spec['netcdf'].prefix,
+                  string=True)
         ff.filter('HDF5_ROOT:PATH=${TPL}',
-            'HDF5_ROOT:PATH=%s' % self.spec['hdf5'].prefix, string=True)
+                  'HDF5_ROOT:PATH=%s' % self.spec['hdf5'].prefix,
+                  string=True)
 
     def install(self, spec, prefix):
         mkdirp('build')
diff --git a/var/spack/repos/builtin/packages/expat/package.py b/var/spack/repos/builtin/packages/expat/package.py
index 2a9ac123f3..7d0fdae1d4 100644
--- a/var/spack/repos/builtin/packages/expat/package.py
+++ b/var/spack/repos/builtin/packages/expat/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Expat(Package):
     """<eXpat/> is an XML parser library written in C"""
     homepage = "http://expat.sourceforge.net/"
@@ -39,4 +40,3 @@ def install(self, spec, prefix):
             cmake('..', *std_cmake_args)
             make()
             make('install')
-
diff --git a/var/spack/repos/builtin/packages/extrae/package.py b/var/spack/repos/builtin/packages/extrae/package.py
index 84c410e4ba..72bfbe6326 100644
--- a/var/spack/repos/builtin/packages/extrae/package.py
+++ b/var/spack/repos/builtin/packages/extrae/package.py
@@ -25,7 +25,23 @@
 from spack import *
 
 # typical working line with extrae 3.0.1
-# ./configure --prefix=/usr/local --with-mpi=/usr/lib64/mpi/gcc/openmpi --with-unwind=/usr/local --with-papi=/usr --with-dwarf=/usr --with-elf=/usr --with-dyninst=/usr --with-binutils=/usr --with-xml-prefix=/usr --enable-openmp --enable-nanos --enable-pthread --disable-parallel-merge LDFLAGS=-pthread
+# ./configure
+#   --prefix=/usr/local
+#   --with-mpi=/usr/lib64/mpi/gcc/openmpi
+#   --with-unwind=/usr/local
+#   --with-papi=/usr
+#   --with-dwarf=/usr
+#   --with-elf=/usr
+#   --with-dyninst=/usr
+#   --with-binutils=/usr
+#   --with-xml-prefix=/usr
+#   --enable-openmp
+#   --enable-nanos
+#   --enable-pthread
+#   --disable-parallel-merge
+#
+# LDFLAGS=-pthread
+
 
 class Extrae(Package):
     """Extrae is the package devoted to generate tracefiles which can
@@ -55,16 +71,16 @@ def install(self, spec, prefix):
         elif 'mvapich2' in spec:
             mpi = spec['mvapich2']
 
-        configure("--prefix=%s"				% prefix,
-	            "--with-mpi=%s"				% mpi.prefix,
-	            "--with-unwind=%s"			% spec['libunwind'].prefix,
-	            "--with-dyninst=%s"			% spec['dyninst'].prefix,
-	            "--with-boost=%s"			% spec['boost'].prefix,
-	            "--with-dwarf=%s"			% spec['libdwarf'].prefix,
-	            "--with-papi=%s"			% spec['papi'].prefix,
-	            "--with-dyninst-headers=%s"	% spec['dyninst'].prefix.include,
-	            "--with-dyninst-libs=%s"	% spec['dyninst'].prefix.lib)
+        configure("--prefix=%s" % prefix,
+                  "--with-mpi=%s" % mpi.prefix,
+                  "--with-unwind=%s" % spec['libunwind'].prefix,
+                  "--with-dyninst=%s" % spec['dyninst'].prefix,
+                  "--with-boost=%s" % spec['boost'].prefix,
+                  "--with-dwarf=%s" % spec['libdwarf'].prefix,
+                  "--with-papi=%s" % spec['papi'].prefix,
+                  "--with-dyninst-headers=%s" % spec[
+                      'dyninst'].prefix.include,
+                  "--with-dyninst-libs=%s" % spec['dyninst'].prefix.lib)
 
         make()
         make("install", parallel=False)
-
diff --git a/var/spack/repos/builtin/packages/exuberant-ctags/package.py b/var/spack/repos/builtin/packages/exuberant-ctags/package.py
index c49d0624f6..10be30ab8b 100644
--- a/var/spack/repos/builtin/packages/exuberant-ctags/package.py
+++ b/var/spack/repos/builtin/packages/exuberant-ctags/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class ExuberantCtags(Package):
     """The canonical ctags generator"""
     homepage = "ctags.sourceforge.net"
diff --git a/var/spack/repos/builtin/packages/fenics/package.py b/var/spack/repos/builtin/packages/fenics/package.py
index 465ab651be..1762b15b66 100644
--- a/var/spack/repos/builtin/packages/fenics/package.py
+++ b/var/spack/repos/builtin/packages/fenics/package.py
@@ -44,13 +44,18 @@ class Fenics(Package):
     variant('petsc',        default=True,  description='Compile with PETSc')
     variant('slepc',        default=True,  description='Compile with SLEPc')
     variant('trilinos',     default=True,  description='Compile with Trilinos')
-    variant('suite-sparse', default=True,  description='Compile with SuiteSparse solvers')
+    variant('suite-sparse', default=True,
+            description='Compile with SuiteSparse solvers')
     variant('vtk',          default=False, description='Compile with VTK')
     variant('qt',           default=False, description='Compile with QT')
-    variant('mpi',          default=True,  description='Enables the distributed memory support')
-    variant('openmp',       default=True,  description='Enables the shared memory support')
-    variant('shared',       default=True,  description='Enables the build of shared libraries')
-    variant('debug',        default=False, description='Builds a debug version of the libraries')
+    variant('mpi',          default=True,
+            description='Enables the distributed memory support')
+    variant('openmp',       default=True,
+            description='Enables the shared memory support')
+    variant('shared',       default=True,
+            description='Enables the build of shared libraries')
+    variant('debug',        default=False,
+            description='Builds a debug version of the libraries')
 
     # not part of spack list for now
     # variant('petsc4py',     default=True,  description='Uses PETSc4py')
@@ -109,7 +114,8 @@ class Fenics(Package):
     ]
 
     for release in releases:
-        version(release['version'], release['md5'], url=base_url.format(pkg='dolfin', version=release['version']))
+        version(release['version'], release['md5'], url=base_url.format(
+            pkg='dolfin', version=release['version']))
         for name, md5 in release['resources'].items():
             resource(name=name,
                      url=base_url.format(pkg=name, **release),
diff --git a/var/spack/repos/builtin/packages/fftw/package.py b/var/spack/repos/builtin/packages/fftw/package.py
index 434aeea616..570cd1bbdd 100644
--- a/var/spack/repos/builtin/packages/fftw/package.py
+++ b/var/spack/repos/builtin/packages/fftw/package.py
@@ -28,26 +28,36 @@
 
 
 class Fftw(Package):
-    """
-    FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of
-    arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine
-    transforms or DCT/DST). We believe that FFTW, which is free software, should become the FFT library of choice for
-    most applications.
+    """FFTW is a C subroutine library for computing the discrete Fourier
+       transform (DFT) in one or more dimensions, of arbitrary input
+       size, and of both real and complex data (as well as of even/odd
+       data, i.e. the discrete cosine/sine transforms or DCT/DST). We
+       believe that FFTW, which is free software, should become the FFT
+       library of choice for most applications.
+
     """
     homepage = "http://www.fftw.org"
     url      = "http://www.fftw.org/fftw-3.3.4.tar.gz"
 
     version('3.3.4', '2edab8c06b24feeb3b82bbb3ebf3e7b3')
 
-    variant('float', default=True, description='Produces a single precision version of the library')
-    variant('long_double', default=True, description='Produces a long double precision version of the library')
-    variant('quad', default=False, description='Produces a quad precision version of the library (works only with GCC and libquadmath)')
+    variant(
+        'float', default=True,
+        description='Produces a single precision version of the library')
+    variant(
+        'long_double', default=True,
+        description='Produces a long double precision version of the library')
+    variant(
+        'quad', default=False,
+        description='Produces a quad precision version of the library '
+                    '(works only with GCC and libquadmath)')
     variant('openmp', default=False, description="Enable OpenMP support.")
     variant('mpi', default=False, description='Activate MPI support')
 
     depends_on('mpi', when='+mpi')
 
-    # TODO : add support for architecture specific optimizations as soon as targets are supported
+    # TODO : add support for architecture specific optimizations as soon as
+    # targets are supported
 
     def install(self, spec, prefix):
         options = ['--prefix=%s' % prefix,
@@ -57,9 +67,9 @@ def install(self, spec, prefix):
         if '+openmp' in spec:
             # Note: Apple's Clang does not support OpenMP.
             if spec.satisfies('%clang'):
-              ver = str(self.compiler.version)
-              if ver.endswith('-apple'):
-                raise InstallError("Apple's clang does not support OpenMP")
+                ver = str(self.compiler.version)
+                if ver.endswith('-apple'):
+                    raise InstallError("Apple's clang does not support OpenMP")
             options.append('--enable-openmp')
         if not self.compiler.f77 or not self.compiler.fc:
             options.append("--disable-fortran")
diff --git a/var/spack/repos/builtin/packages/fish/package.py b/var/spack/repos/builtin/packages/fish/package.py
index 9d23a3d63d..0e85f410c1 100644
--- a/var/spack/repos/builtin/packages/fish/package.py
+++ b/var/spack/repos/builtin/packages/fish/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Fish(Package):
     """fish is a smart and user-friendly command line shell for OS X, Linux, and
     the rest of the family.
diff --git a/var/spack/repos/builtin/packages/fltk/package.py b/var/spack/repos/builtin/packages/fltk/package.py
index f8ac5bc2a4..f29b64b02b 100644
--- a/var/spack/repos/builtin/packages/fltk/package.py
+++ b/var/spack/repos/builtin/packages/fltk/package.py
@@ -26,13 +26,16 @@
 
 
 class Fltk(Package):
-    """
-    FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit for UNIX/Linux (X11), Microsoft Windows, and
-    MacOS X. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL and its
-    built-in GLUT emulation.
+    """FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit for
+       UNIX/Linux (X11), Microsoft Windows, and MacOS X. FLTK provides
+       modern GUI functionality without the bloat and supports 3D
+       graphics via OpenGL and its built-in GLUT emulation.
+
+       FLTK is designed to be small and modular enough to be statically
+       linked, but works fine as a shared library. FLTK also includes an
+       excellent UI builder called FLUID that can be used to create
+       applications in minutes.
 
-    FLTK is designed to be small and modular enough to be statically linked, but works fine as a shared library. FLTK
-    also includes an excellent UI builder called FLUID that can be used to create applications in minutes.
     """
     homepage = 'http://www.fltk.org/'
     url = 'http://fltk.org/pub/fltk/1.3.3/fltk-1.3.3-source.tar.gz'
@@ -41,7 +44,8 @@ class Fltk(Package):
 
     patch('font.patch', when='@1.3.3')
 
-    variant('shared', default=True, description='Enables the build of shared libraries')
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
 
     def install(self, spec, prefix):
         options = ['--prefix=%s' % prefix,
diff --git a/var/spack/repos/builtin/packages/flux/package.py b/var/spack/repos/builtin/packages/flux/package.py
index dec339a6af..2fd2392b5e 100644
--- a/var/spack/repos/builtin/packages/flux/package.py
+++ b/var/spack/repos/builtin/packages/flux/package.py
@@ -25,13 +25,15 @@
 from spack import *
 import os
 
+
 class Flux(Package):
     """ A next-generation resource manager (pre-alpha) """
 
     homepage = "https://github.com/flux-framework/flux-core"
     url      = "https://github.com/flux-framework/flux-core"
 
-    version('master', branch='master', git='https://github.com/flux-framework/flux-core')
+    version('master', branch='master',
+            git='https://github.com/flux-framework/flux-core')
 
     # Also needs autotools, but should use the system version if available
     depends_on("zeromq@4.0.4:")
@@ -52,12 +54,11 @@ def install(self, spec, prefix):
         # Bootstrap with autotools
         bash = which('bash')
         bash('./autogen.sh')
-        bash('./autogen.sh') #yes, twice, intentionally
+        bash('./autogen.sh')  # yes, twice, intentionally
 
         # Fix asciidoc dependency on xml style sheets and whatnot
-        os.environ['XML_CATALOG_FILES'] = os.path.join(spec['docbook-xml'].prefix,
-                                                       'catalog.xml')
+        os.environ['XML_CATALOG_FILES'] = os.path.join(
+            spec['docbook-xml'].prefix, 'catalog.xml')
         # Configure, compile & install
         configure("--prefix=" + prefix)
         make("install", "V=1")
-
diff --git a/var/spack/repos/builtin/packages/foam-extend/package.py b/var/spack/repos/builtin/packages/foam-extend/package.py
index 0ff5765895..6b3b87a110 100644
--- a/var/spack/repos/builtin/packages/foam-extend/package.py
+++ b/var/spack/repos/builtin/packages/foam-extend/package.py
@@ -16,12 +16,24 @@ class FoamExtend(Package):
     version('3.0', git='http://git.code.sf.net/p/foam-extend/foam-extend-3.0')
 
     variant('paraview', default=False, description='Enable ParaFOAM')
-    variant('scotch', default=True, description='Activate Scotch as a possible decomposition library')
-    variant('ptscotch', default=True, description='Activate PT-Scotch as a possible decomposition library')
-    variant('metis', default=True, description='Activate Metis as a possible decomposition library')
-    variant('parmetis', default=True, description='Activate Parmetis as a possible decomposition library')
-    variant('parmgridgen', default=True, description='Activate Parmgridgen support')
-    variant('source', default=True, description='Installs also the source folder')
+    variant(
+        'scotch', default=True,
+        description='Activate Scotch as a possible decomposition library')
+    variant(
+        'ptscotch', default=True,
+        description='Activate PT-Scotch as a possible decomposition library')
+    variant(
+        'metis', default=True,
+        description='Activate Metis as a possible decomposition library')
+    variant(
+        'parmetis', default=True,
+        description='Activate Parmetis as a possible decomposition library')
+    variant(
+        'parmgridgen', default=True,
+        description='Activate Parmgridgen support')
+    variant(
+        'source', default=True,
+        description='Installs also the source folder')
 
     supported_compilers = {'clang': 'Clang', 'gcc': 'Gcc', 'intel': 'Icc'}
 
@@ -80,7 +92,7 @@ def patch(self):
             filter_file(
                 r'-lMGridGen',
                 r'-lmgrid',
-                'src/fvAgglomerationMethods/MGridGenGamgAgglomeration/Make/options')  # NOQA: ignore=501
+                'src/fvAgglomerationMethods/MGridGenGamgAgglomeration/Make/options')  # noqa
 
         # Get the wmake arch and compiler
         (arch, foam_compiler) = self.set_arch()
diff --git a/var/spack/repos/builtin/packages/fontconfig/package.py b/var/spack/repos/builtin/packages/fontconfig/package.py
index 76e9d8cb3f..0d7e47f228 100644
--- a/var/spack/repos/builtin/packages/fontconfig/package.py
+++ b/var/spack/repos/builtin/packages/fontconfig/package.py
@@ -24,12 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Fontconfig(Package):
     """Fontconfig customizing font access"""
     homepage = "http://www.freedesktop.org/wiki/Software/fontconfig/"
     url      = "http://www.freedesktop.org/software/fontconfig/release/fontconfig-2.11.1.tar.gz"
 
-    version('2.11.1' , 'e75e303b4f7756c2b16203a57ac87eba')
+    version('2.11.1', 'e75e303b4f7756c2b16203a57ac87eba')
 
     depends_on('freetype')
     depends_on('libxml2')
diff --git a/var/spack/repos/builtin/packages/gasnet/package.py b/var/spack/repos/builtin/packages/gasnet/package.py
index b3bd6c25f2..12ecd9fd6f 100644
--- a/var/spack/repos/builtin/packages/gasnet/package.py
+++ b/var/spack/repos/builtin/packages/gasnet/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Gasnet(Package):
     """GASNet is a language-independent, low-level networking layer
        that provides network-independent, high-performance communication
@@ -36,24 +37,24 @@ class Gasnet(Package):
 
     version('1.24.0', 'c8afdf48381e8b5a7340bdb32ca0f41a')
 
-
     def install(self, spec, prefix):
         # TODO: don't use paths with @ in them.
         change_sed_delimiter('@', ';', 'configure')
 
-        configure("--prefix=%s" % prefix,
-                  # TODO: factor IB suport out into architecture description.
-                  "--enable-ibv",
-                  "--enable-udp",
-                  "--disable-mpi",
-                  "--enable-par",
-                  "--enable-mpi-compat",
-                  "--enable-segment-fast",
-                  "--disable-aligned-segments",
-                  # TODO: make an option so that Legion can request builds with/without this.
-                  # See the Legion webpage for details on when to/not to use.
-                  "--disable-pshm",
-                  "--with-segment-mmap-max=64MB")
+        configure(
+            "--prefix=%s" % prefix,
+            # TODO: factor IB suport out into architecture description.
+            "--enable-ibv",
+            "--enable-udp",
+            "--disable-mpi",
+            "--enable-par",
+            "--enable-mpi-compat",
+            "--enable-segment-fast",
+            "--disable-aligned-segments",
+            # TODO: make option so Legion can request builds with/without this.
+            # See the Legion webpage for details on when to/not to use.
+            "--disable-pshm",
+            "--with-segment-mmap-max=64MB")
 
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/gdal/package.py b/var/spack/repos/builtin/packages/gdal/package.py
index 9ed83bc3be..4fdfafc992 100644
--- a/var/spack/repos/builtin/packages/gdal/package.py
+++ b/var/spack/repos/builtin/packages/gdal/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Gdal(Package):
     """
     GDAL is a translator library for raster and vector geospatial
diff --git a/var/spack/repos/builtin/packages/gdb/package.py b/var/spack/repos/builtin/packages/gdb/package.py
index 78ad4b307d..9145009fa4 100644
--- a/var/spack/repos/builtin/packages/gdb/package.py
+++ b/var/spack/repos/builtin/packages/gdb/package.py
@@ -27,9 +27,10 @@
 
 
 class Gdb(Package):
-    """
-    GDB, the GNU Project debugger, allows you to see what is going on `inside' another program while it executes
-    -- or what another program was doing at the moment it crashed.
+    """GDB, the GNU Project debugger, allows you to see what is going on
+       `inside' another program while it executes -- or what another
+       program was doing at the moment it crashed.
+
     """
     homepage = "https://www.gnu.org/software/gdb"
     url = "http://ftp.gnu.org/gnu/gdb/gdb-7.10.tar.gz"
diff --git a/var/spack/repos/builtin/packages/gdk-pixbuf/package.py b/var/spack/repos/builtin/packages/gdk-pixbuf/package.py
index daf43f3256..d7a0200395 100644
--- a/var/spack/repos/builtin/packages/gdk-pixbuf/package.py
+++ b/var/spack/repos/builtin/packages/gdk-pixbuf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class GdkPixbuf(Package):
     """The Gdk Pixbuf is a toolkit for image loading and pixel buffer
        manipulation. It is used by GTK+ 2 and GTK+ 3 to load and
diff --git a/var/spack/repos/builtin/packages/geos/package.py b/var/spack/repos/builtin/packages/geos/package.py
index 88438b0a99..324186cfbc 100644
--- a/var/spack/repos/builtin/packages/geos/package.py
+++ b/var/spack/repos/builtin/packages/geos/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class Geos(Package):
     """GEOS (Geometry Engine - Open Source) is a C++ port of the Java
diff --git a/var/spack/repos/builtin/packages/gflags/package.py b/var/spack/repos/builtin/packages/gflags/package.py
index 47bbf369ef..7e04c9b682 100644
--- a/var/spack/repos/builtin/packages/gflags/package.py
+++ b/var/spack/repos/builtin/packages/gflags/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Gflags(Package):
     """The gflags package contains a C++ library that implements
     commandline flags processing. It includes built-in support for
diff --git a/var/spack/repos/builtin/packages/gl2ps/package.py b/var/spack/repos/builtin/packages/gl2ps/package.py
index 25172bd544..d5e7b00027 100644
--- a/var/spack/repos/builtin/packages/gl2ps/package.py
+++ b/var/spack/repos/builtin/packages/gl2ps/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Gl2ps(Package):
     """GL2PS is a C library providing high quality vector output for any
     OpenGL application."""
diff --git a/var/spack/repos/builtin/packages/glm/package.py b/var/spack/repos/builtin/packages/glm/package.py
index 442c1cdf40..c565b3cae7 100644
--- a/var/spack/repos/builtin/packages/glm/package.py
+++ b/var/spack/repos/builtin/packages/glm/package.py
@@ -26,9 +26,10 @@
 
 
 class Glm(Package):
-    """
-    OpenGL Mathematics (GLM) is a header only C++ mathematics library for graphics software based on
-    the OpenGL Shading Language (GLSL) specification.
+    """OpenGL Mathematics (GLM) is a header only C++ mathematics library for
+       graphics software based on the OpenGL Shading Language (GLSL)
+       specification.
+
     """
 
     homepage = "https://github.com/g-truc/glm"
diff --git a/var/spack/repos/builtin/packages/glog/package.py b/var/spack/repos/builtin/packages/glog/package.py
index 03ee092429..14f042732b 100644
--- a/var/spack/repos/builtin/packages/glog/package.py
+++ b/var/spack/repos/builtin/packages/glog/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Glog(Package):
     """C++ implementation of the Google logging module."""
 
diff --git a/var/spack/repos/builtin/packages/glpk/package.py b/var/spack/repos/builtin/packages/glpk/package.py
index 2ab3c38150..1b52643e59 100644
--- a/var/spack/repos/builtin/packages/glpk/package.py
+++ b/var/spack/repos/builtin/packages/glpk/package.py
@@ -22,22 +22,23 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-
 from spack import *
 
 
 class Glpk(Package):
-    """
-    The GLPK (GNU Linear Programming Kit) package is intended for solving large-scale linear programming (LP), mixed
-    integer programming (MIP), and other related problems. It is a set of routines written in ANSI C and organized in
-    the form of a callable library
+    """The GLPK (GNU Linear Programming Kit) package is intended for solving
+       large-scale linear programming (LP), mixed integer programming
+       (MIP), and other related problems. It is a set of routines written
+       in ANSI C and organized in the form of a callable library
+
     """
     homepage = "https://www.gnu.org/software/glpk"
     url = "http://ftp.gnu.org/gnu/glpk/glpk-4.57.tar.gz"
 
     version('4.57', '237531a54f73155842f8defe51aedb0f')
 
-    variant('gmp', default=False, description='Activates support for GMP library')
+    variant('gmp', default=False,
+            description='Activates support for GMP library')
 
     depends_on('gmp', when='+gmp')
 
diff --git a/var/spack/repos/builtin/packages/gmsh/package.py b/var/spack/repos/builtin/packages/gmsh/package.py
index fe26cb3bf2..72f490e2f4 100644
--- a/var/spack/repos/builtin/packages/gmsh/package.py
+++ b/var/spack/repos/builtin/packages/gmsh/package.py
@@ -41,15 +41,21 @@ class Gmsh(Package):
     version('2.12.0', '7fbd2ec8071e79725266e72744d21e902d4fe6fa9e7c52340ad5f4be5c159d09')
     version('2.11.0', 'f15b6e7ac9ca649c9a74440e1259d0db')
 
-    variant('shared',      default=True,  description='Enables the build of shared libraries')
-    variant('debug',       default=False, description='Builds the library in debug mode')
-    variant('mpi',         default=False, description='Builds MPI support for parser and solver')
-    variant('fltk',        default=False, description='Enables the build of the FLTK GUI')
+    variant('shared',      default=True,
+            description='Enables the build of shared libraries')
+    variant('debug',       default=False,
+            description='Builds the library in debug mode')
+    variant('mpi',         default=False,
+            description='Builds MPI support for parser and solver')
+    variant('fltk',        default=False,
+            description='Enables the build of the FLTK GUI')
     variant('hdf5',        default=False, description='Enables HDF5 support')
-    variant('compression', default=True,  description='Enables IO compression through zlib')
+    variant('compression', default=True,
+            description='Enables IO compression through zlib')
     variant('oce',         default=False, description='Build with OCE')
     variant('petsc',       default=False, description='Build with PETSc')
-    variant('slepc',       default=False, description='Build with SLEPc (only when PETSc is enabled)')
+    variant('slepc',       default=False,
+            description='Build with SLEPc (only when PETSc is enabled)')
 
     depends_on('blas')
     depends_on('lapack')
diff --git a/var/spack/repos/builtin/packages/gnu-prolog/package.py b/var/spack/repos/builtin/packages/gnu-prolog/package.py
index f497ed3001..1e0487c654 100644
--- a/var/spack/repos/builtin/packages/gnu-prolog/package.py
+++ b/var/spack/repos/builtin/packages/gnu-prolog/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class GnuProlog(Package):
     """A free Prolog compiler with constraint solving over finite domains."""
     homepage = "http://www.gprolog.org/"
diff --git a/var/spack/repos/builtin/packages/gnuplot/package.py b/var/spack/repos/builtin/packages/gnuplot/package.py
index a76677e066..600b6d285f 100644
--- a/var/spack/repos/builtin/packages/gnuplot/package.py
+++ b/var/spack/repos/builtin/packages/gnuplot/package.py
@@ -27,13 +27,18 @@
 
 import os
 
+
 class Gnuplot(Package):
-    """
-    Gnuplot is a portable command-line driven graphing utility for Linux, OS/2, MS Windows, OSX, VMS, and many other
-    platforms. The source code is copyrighted but freely distributed (i.e., you don't have to pay for it). It was
-    originally created to allow scientists and students to visualize mathematical functions and data interactively,
-    but has grown to support many non-interactive uses such as web scripting. It is also used as a plotting engine by
-    third-party applications like Octave. Gnuplot has been supported and under active development since 1986
+    """Gnuplot is a portable command-line driven graphing utility for Linux,
+       OS/2, MS Windows, OSX, VMS, and many other platforms. The source
+       code is copyrighted but freely distributed (i.e., you don't have
+       to pay for it). It was originally created to allow scientists and
+       students to visualize mathematical functions and data
+       interactively, but has grown to support many non-interactive uses
+       such as web scripting. It is also used as a plotting engine by
+       third-party applications like Octave. Gnuplot has been supported
+       and under active development since 1986
+
     """
     homepage = "http://www.gnuplot.info"
     url      = "http://downloads.sourceforge.net/project/gnuplot/gnuplot/5.0.1/gnuplot-5.0.1.tar.gz"
diff --git a/var/spack/repos/builtin/packages/gnutls/package.py b/var/spack/repos/builtin/packages/gnutls/package.py
index 71b571bc88..5f7b0daf9b 100644
--- a/var/spack/repos/builtin/packages/gnutls/package.py
+++ b/var/spack/repos/builtin/packages/gnutls/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Gnutls(Package):
     """GnuTLS is a secure communications library implementing the SSL,
        TLS and DTLS protocols and technologies around them. It
diff --git a/var/spack/repos/builtin/packages/googletest/package.py b/var/spack/repos/builtin/packages/googletest/package.py
index 1dc74fbcf4..6f3cafec06 100644
--- a/var/spack/repos/builtin/packages/googletest/package.py
+++ b/var/spack/repos/builtin/packages/googletest/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Googletest(Package):
     """Google test framework for C++.  Also called gtest."""
     homepage = "https://github.com/google/googletest"
@@ -40,9 +41,8 @@ def install(self, spec, prefix):
 
         # Google Test doesn't have a make install
         # We have to do our own install here.
-	install_tree('include', prefix.include)
+        install_tree('include', prefix.include)
 
         mkdirp(prefix.lib)
-	install('./libgtest.a', '%s' % prefix.lib)
-	install('./libgtest_main.a', '%s' % prefix.lib)
-
+        install('./libgtest.a', '%s' % prefix.lib)
+        install('./libgtest_main.a', '%s' % prefix.lib)
diff --git a/var/spack/repos/builtin/packages/gperf/package.py b/var/spack/repos/builtin/packages/gperf/package.py
index af176afcf6..0e54d0e037 100644
--- a/var/spack/repos/builtin/packages/gperf/package.py
+++ b/var/spack/repos/builtin/packages/gperf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Gperf(Package):
     """GNU gperf is a perfect hash function generator. For a given
     list of strings, it produces a hash function and hash table, in
diff --git a/var/spack/repos/builtin/packages/gperftools/package.py b/var/spack/repos/builtin/packages/gperftools/package.py
index 1f17ab71a4..c6ca6c8057 100644
--- a/var/spack/repos/builtin/packages/gperftools/package.py
+++ b/var/spack/repos/builtin/packages/gperftools/package.py
@@ -24,14 +24,20 @@
 ##############################################################################
 from spack import *
 
+
 class Gperftools(Package):
-    """Google's fast malloc/free implementation, especially for multi-threaded applications.
-       Contains tcmalloc, heap-checker, heap-profiler, and cpu-profiler."""
+    """Google's fast malloc/free implementation, especially for
+       multi-threaded applications.  Contains tcmalloc, heap-checker,
+       heap-profiler, and cpu-profiler.
+
+    """
     homepage = "https://code.google.com/p/gperftools"
     url      = "https://googledrive.com/host/0B6NtGsLhIcf7MWxMMF9JdTN3UVk/gperftools-2.3.tar.gz"
 
-    version('2.4', '2171cea3bbe053036fb5d5d25176a160', url="https://github.com/gperftools/gperftools/releases/download/gperftools-2.4/gperftools-2.4.tar.gz")
-    version('2.3', 'f54dd119f0e46ac1f13264f8d97adf90', url="https://googledrive.com/host/0B6NtGsLhIcf7MWxMMF9JdTN3UVk/gperftools-2.3.tar.gz")
+    version('2.4', '2171cea3bbe053036fb5d5d25176a160',
+            url="https://github.com/gperftools/gperftools/releases/download/gperftools-2.4/gperftools-2.4.tar.gz")
+    version('2.3', 'f54dd119f0e46ac1f13264f8d97adf90',
+            url="https://googledrive.com/host/0B6NtGsLhIcf7MWxMMF9JdTN3UVk/gperftools-2.3.tar.gz")
 
     depends_on("libunwind")
 
diff --git a/var/spack/repos/builtin/packages/graphlib/package.py b/var/spack/repos/builtin/packages/graphlib/package.py
index 087a322acc..0c3cd9b649 100644
--- a/var/spack/repos/builtin/packages/graphlib/package.py
+++ b/var/spack/repos/builtin/packages/graphlib/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Graphlib(Package):
     """Library to create, manipulate, and export graphs Graphlib."""
     homepage = "http://https://github.com/lee218llnl/graphlib"
diff --git a/var/spack/repos/builtin/packages/gsl/package.py b/var/spack/repos/builtin/packages/gsl/package.py
index c1695a6f02..574d3b9402 100644
--- a/var/spack/repos/builtin/packages/gsl/package.py
+++ b/var/spack/repos/builtin/packages/gsl/package.py
@@ -27,17 +27,19 @@
 
 
 class Gsl(Package):
-    """
-    The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the
-    GNU General Public License. The library provides a wide range of mathematical routines such as random number
-    generators, special functions and least-squares fitting. There are over 1000 functions in total with an extensive
-    test suite.
+    """The GNU Scientific Library (GSL) is a numerical library for C and C++
+       programmers. It is free software under the GNU General Public
+       License. The library provides a wide range of mathematical
+       routines such as random number generators, special functions and
+       least-squares fitting. There are over 1000 functions in total with
+       an extensive test suite.
+
     """
     homepage = "http://www.gnu.org/software/gsl"
     url      = "http://mirror.switch.ch/ftp/mirror/gnu/gsl/gsl-2.1.tar.gz"
 
-    version('2.1' , 'd8f70abafd3e9f0bae03c52d1f4e8de5')
-    version('2.0' , 'ae44cdfed78ece40e73411b63a78c375')
+    version('2.1', 'd8f70abafd3e9f0bae03c52d1f4e8de5')
+    version('2.0', 'ae44cdfed78ece40e73411b63a78c375')
     version('1.16', 'e49a664db13d81c968415cd53f62bc8b')
 
     def install(self, spec, prefix):
diff --git a/var/spack/repos/builtin/packages/gtkplus/package.py b/var/spack/repos/builtin/packages/gtkplus/package.py
index c135e89f78..c85bbe4094 100644
--- a/var/spack/repos/builtin/packages/gtkplus/package.py
+++ b/var/spack/repos/builtin/packages/gtkplus/package.py
@@ -24,12 +24,15 @@
 ##############################################################################
 from spack import *
 
+
 class Gtkplus(Package):
-    """The GTK+ 2 package contains libraries used for creating graphical user interfaces for applications."""
+    """The GTK+ 2 package contains libraries used for creating graphical user
+       interfaces for applications."""
     homepage = "http://www.gtk.org"
 
-    version('2.24.25', '612350704dd3aacb95355a4981930c6f',
-            url="http://ftp.gnome.org/pub/gnome/sources/gtk+/2.24/gtk+-2.24.25.tar.xz")
+    version(
+        '2.24.25', '612350704dd3aacb95355a4981930c6f',
+        url="http://ftp.gnome.org/pub/gnome/sources/gtk+/2.24/gtk+-2.24.25.tar.xz")
 
     depends_on("atk")
     depends_on("gdk-pixbuf")
diff --git a/var/spack/repos/builtin/packages/hdf/package.py b/var/spack/repos/builtin/packages/hdf/package.py
index 7ad4df2fde..aafb345be6 100644
--- a/var/spack/repos/builtin/packages/hdf/package.py
+++ b/var/spack/repos/builtin/packages/hdf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Hdf(Package):
     """HDF4 (also known as HDF) is a library and multi-object
     file format for storing and managing data between machines."""
@@ -41,10 +42,9 @@ class Hdf(Package):
     depends_on("szip", when='+szip')
     depends_on("zlib")
 
-
     def url_for_version(self, version):
-       return "https://www.hdfgroup.org/ftp/HDF/releases/HDF" + str(version) + "/src/hdf-" + str(version) + ".tar.gz"
-
+        return "https://www.hdfgroup.org/ftp/HDF/releases/HDF" + str(
+            version) + "/src/hdf-" + str(version) + ".tar.gz"
 
     def install(self, spec, prefix):
         config_args = [
@@ -52,9 +52,9 @@ def install(self, spec, prefix):
             '--prefix=%s' % prefix,
             '--with-jpeg=%s' % spec['jpeg'].prefix,
             '--with-zlib=%s' % spec['zlib'].prefix,
-            '--disable-netcdf',  # must be disabled to build NetCDF with HDF4 support
+            '--disable-netcdf',  # must be disabled to build NetCDF with HDF4
             '--enable-fortran',
-            '--disable-shared',  # fortran and shared libraries are not compatible
+            '--disable-shared',  # fortran and shared libs are not compatible
             '--enable-static',
             '--enable-production'
         ]
diff --git a/var/spack/repos/builtin/packages/hdf5-blosc/package.py b/var/spack/repos/builtin/packages/hdf5-blosc/package.py
index 28b65711b0..89c20f3998 100644
--- a/var/spack/repos/builtin/packages/hdf5-blosc/package.py
+++ b/var/spack/repos/builtin/packages/hdf5-blosc/package.py
@@ -29,6 +29,7 @@
 
 from spack import *
 
+
 def _install_shlib(name, src, dst):
     """Install a shared library from directory src to directory dst"""
     if sys.platform == "darwin":
@@ -44,6 +45,7 @@ def _install_shlib(name, src, dst):
         os.symlink(shlib000, join_path(dst, shlib0))
         os.symlink(shlib0, join_path(dst, shlib))
 
+
 class Hdf5Blosc(Package):
     """Blosc filter for HDF5"""
     homepage = "https://github.com/Blosc/hdf5-blosc"
@@ -60,18 +62,21 @@ class Hdf5Blosc(Package):
     def install(self, spec, prefix):
         # The included cmake recipe doesn"t work for Darwin
         # cmake(".", *std_cmake_args)
-        # 
+        #
         # make()
         # make("install")
         # if sys.platform == "darwin":
         #     fix_darwin_install_name(prefix.lib)
 
         libtool = Executable(join_path(spec["libtool"].prefix.bin, "libtool"))
-        if "+mpi" in spec["hdf5"]:
-            cc = "mpicc"
-        else:
-            cc = "cc"
-        shlibext = "so" if sys.platform!="darwin" else "dylib"
+
+        # TODO: these vars are not used.
+        # if "+mpi" in spec["hdf5"]:
+        #     cc = "mpicc"  # noqa
+        # else:
+        #     cc = "cc"     # noqa
+        # shlibext = "so" if sys.platform != "darwin" else "dylib"  # noqa
+
         mkdirp(prefix.include)
         mkdirp(prefix.lib)
 
@@ -118,7 +123,7 @@ def check_install(self, spec):
 #include <stdio.h>
 #include <stdlib.h>
 
-#define FILTER_BLOSC 32001   /* Blosc filter ID registered with the HDF group */
+#define FILTER_BLOSC 32001 /* Blosc filter ID registered with the HDF group */
 
 int main(int argc, char **argv) {
   herr_t herr;
@@ -184,13 +189,13 @@ def check_install(self, spec):
             if not success:
                 print "Produced output does not match expected output."
                 print "Expected output:"
-                print "-"*80
+                print "-" * 80
                 print expected
-                print "-"*80
+                print "-" * 80
                 print "Produced output:"
-                print "-"*80
+                print "-" * 80
                 print output
-                print "-"*80
+                print "-" * 80
                 print "Environment:"
                 env = which("env")
                 env()
diff --git a/var/spack/repos/builtin/packages/hdf5/package.py b/var/spack/repos/builtin/packages/hdf5/package.py
index d169940c86..aedaf18218 100644
--- a/var/spack/repos/builtin/packages/hdf5/package.py
+++ b/var/spack/repos/builtin/packages/hdf5/package.py
@@ -44,15 +44,18 @@ class Hdf5(Package):
     version('1.8.15', '03cccb5b33dbe975fdcd8ae9dc021f24')
     version('1.8.13', 'c03426e9e77d7766944654280b467289')
 
-    variant('debug', default=False, description='Builds a debug version of the library')
-    variant('shared', default=True, description='Builds a shared version of the library')
+    variant('debug', default=False,
+            description='Builds a debug version of the library')
+    variant('shared', default=True,
+            description='Builds a shared version of the library')
 
     variant('cxx', default=True, description='Enable C++ support')
     variant('fortran', default=True, description='Enable Fortran support')
 
     variant('mpi', default=False, description='Enable MPI support')
     variant('szip', default=False, description='Enable szip support')
-    variant('threadsafe', default=False, description='Enable thread-safe capabilities')
+    variant('threadsafe', default=False,
+            description='Enable thread-safe capabilities')
 
     depends_on("mpi", when='+mpi')
     depends_on("szip", when='+szip')
diff --git a/var/spack/repos/builtin/packages/hoomd-blue/package.py b/var/spack/repos/builtin/packages/hoomd-blue/package.py
index 060cd0b713..79e99e7b89 100644
--- a/var/spack/repos/builtin/packages/hoomd-blue/package.py
+++ b/var/spack/repos/builtin/packages/hoomd-blue/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class HoomdBlue(Package):
     """HOOMD-blue is a general-purpose particle simulation toolkit. It scales
     from a single CPU core to thousands of GPUs.
@@ -56,7 +57,7 @@ def install(self, spec, prefix):
 
         cmake_args = [
             '-DPYTHON_EXECUTABLE=%s/python' % spec['python'].prefix.bin,
-            '-DBOOST_ROOT=%s'               % spec['boost' ].prefix
+            '-DBOOST_ROOT=%s'               % spec['boost'].prefix
         ]
 
         # MPI support
@@ -73,9 +74,9 @@ def install(self, spec, prefix):
             cmake_args.append('-DENABLE_CUDA=OFF')
 
         # CUDA-aware MPI library support
-        #if '+cuda' in spec and '+mpi' in spec:
+        # if '+cuda' in spec and '+mpi' in spec:
         #    cmake_args.append('-DENABLE_MPI_CUDA=ON')
-        #else:
+        # else:
         #    cmake_args.append('-DENABLE_MPI_CUDA=OFF')
 
         # There may be a bug in the MPI-CUDA code. See:
diff --git a/var/spack/repos/builtin/packages/hpx5/package.py b/var/spack/repos/builtin/packages/hpx5/package.py
index cd0c0b7a7b..686e959719 100644
--- a/var/spack/repos/builtin/packages/hpx5/package.py
+++ b/var/spack/repos/builtin/packages/hpx5/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class Hpx5(Package):
     """The HPX-5 Runtime System. HPX-5 (High Performance ParalleX) is an
     open source, portable, performance-oriented runtime developed at
diff --git a/var/spack/repos/builtin/packages/hwloc/package.py b/var/spack/repos/builtin/packages/hwloc/package.py
index ee0168c38e..c163628840 100644
--- a/var/spack/repos/builtin/packages/hwloc/package.py
+++ b/var/spack/repos/builtin/packages/hwloc/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Hwloc(Package):
     """The Portable Hardware Locality (hwloc) software package
        provides a portable abstraction (across OS, versions,
diff --git a/var/spack/repos/builtin/packages/hydra/package.py b/var/spack/repos/builtin/packages/hydra/package.py
index 3d56056022..eee346ba49 100644
--- a/var/spack/repos/builtin/packages/hydra/package.py
+++ b/var/spack/repos/builtin/packages/hydra/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Hydra(Package):
     """Hydra is a process management system for starting parallel jobs.
     Hydra is designed to natively work with existing launcher daemons
@@ -37,7 +38,6 @@ class Hydra(Package):
 
     version('3.2', '4d670916695bf7e3a869cc336a881b39')
 
-
     def install(self, spec, prefix):
         configure('--prefix=%s' % prefix)
 
diff --git a/var/spack/repos/builtin/packages/hypre/package.py b/var/spack/repos/builtin/packages/hypre/package.py
index b339e068bf..fdc236dcf4 100644
--- a/var/spack/repos/builtin/packages/hypre/package.py
+++ b/var/spack/repos/builtin/packages/hypre/package.py
@@ -39,9 +39,11 @@ class Hypre(Package):
     version('2.10.0b', '768be38793a35bb5d055905b271f5b8e')
 
     # hypre does not know how to build shared libraries on Darwin
-    variant('shared', default=(sys.platform != 'darwin'), description="Build shared library version (disables static library)")
+    variant('shared', default=(sys.platform != 'darwin'),
+            description="Build shared library (disables static library)")
     # SuperluDist have conflicting headers with those in Hypre
-    variant('internal-superlu', default=True, description="Use internal Superlu routines")
+    variant('internal-superlu', default=True,
+            description="Use internal Superlu routines")
 
     depends_on("mpi")
     depends_on("blas")
diff --git a/var/spack/repos/builtin/packages/ibmisc/package.py b/var/spack/repos/builtin/packages/ibmisc/package.py
index ed1e6c6cbf..8e83058e94 100644
--- a/var/spack/repos/builtin/packages/ibmisc/package.py
+++ b/var/spack/repos/builtin/packages/ibmisc/package.py
@@ -1,5 +1,6 @@
 from spack import *
 
+
 class Ibmisc(CMakePackage):
     """Misc. reusable utilities used by IceBin."""
 
@@ -8,14 +9,22 @@ class Ibmisc(CMakePackage):
 
     version('0.1.0', '12f2a32432a11db48e00217df18e59fa')
 
-    variant('everytrace', default=False, description='Report errors through Everytrace')
-    variant('proj', default=True, description='Compile utilities for PROJ.4 library')
-    variant('blitz', default=True, description='Compile utilities for Blitz library')
-    variant('netcdf', default=True, description='Compile utilities for NetCDF library')
-    variant('boost', default=True, description='Compile utilities for Boost library')
-    variant('udunits2', default=True, description='Compile utilities for UDUNITS2 library')
-    variant('googletest', default=True, description='Compile utilities for Google Test library')
-    variant('python', default=True, description='Compile utilities for use with Python/Cython')
+    variant('everytrace', default=False,
+            description='Report errors through Everytrace')
+    variant('proj', default=True,
+            description='Compile utilities for PROJ.4 library')
+    variant('blitz', default=True,
+            description='Compile utilities for Blitz library')
+    variant('netcdf', default=True,
+            description='Compile utilities for NetCDF library')
+    variant('boost', default=True,
+            description='Compile utilities for Boost library')
+    variant('udunits2', default=True,
+            description='Compile utilities for UDUNITS2 library')
+    variant('googletest', default=True,
+            description='Compile utilities for Google Test library')
+    variant('python', default=True,
+            description='Compile utilities for use with Python/Cython')
 
     extends('python')
 
diff --git a/var/spack/repos/builtin/packages/icu/package.py b/var/spack/repos/builtin/packages/icu/package.py
index c7cabb5d95..b8d366b905 100644
--- a/var/spack/repos/builtin/packages/icu/package.py
+++ b/var/spack/repos/builtin/packages/icu/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Icu(Package):
     """The International Components for Unicode (ICU) package is a
        mature, widely used set of C/C++ libraries providing Unicode and
@@ -36,12 +37,10 @@ class Icu(Package):
 
     version('54.1', 'e844caed8f2ca24c088505b0d6271bc0')
 
-
     def url_for_version(self, version):
         return "http://download.icu-project.org/files/icu4c/%s/icu4c-%s-src.tgz" % (
             version, str(version).replace('.', '_'))
 
-
     def install(self, spec, prefix):
         with working_dir("source"):
             configure("--prefix=%s" % prefix)
diff --git a/var/spack/repos/builtin/packages/icu4c/package.py b/var/spack/repos/builtin/packages/icu4c/package.py
index 6cfec99c3f..2bcf86cd13 100644
--- a/var/spack/repos/builtin/packages/icu4c/package.py
+++ b/var/spack/repos/builtin/packages/icu4c/package.py
@@ -24,9 +24,12 @@
 ##############################################################################
 from spack import *
 
+
 class Icu4c(Package):
-    """ICU is a mature, widely used set of C/C++ and Java libraries 
-    providing Unicode and Globalization support for software applications."""
+    """ICU is a mature, widely used set of C/C++ and Java libraries providing
+       Unicode and Globalization support for software applications.
+
+    """
 
     homepage = "http://site.icu-project.org/"
     url      = "http://downloads.sourceforge.net/project/icu/ICU4C/54.1/icu4c-54_1-src.tgz"
diff --git a/var/spack/repos/builtin/packages/intel-parallel-studio/package.py b/var/spack/repos/builtin/packages/intel-parallel-studio/package.py
index 9ef1724ae0..65db3351a1 100644
--- a/var/spack/repos/builtin/packages/intel-parallel-studio/package.py
+++ b/var/spack/repos/builtin/packages/intel-parallel-studio/package.py
@@ -17,19 +17,19 @@ class IntelParallelStudio(IntelInstaller):
 
     # TODO: can also try the online installer (will download files on demand)
     version('composer.2016.2', '1133fb831312eb519f7da897fec223fa',
-        url="file://%s/parallel_studio_xe_2016_composer_edition_update2.tgz"  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_composer_edition_update2.tgz"
         % os.getcwd())
     version('professional.2016.2', '70be832f2d34c9bf596a5e99d5f2d832',
-        url="file://%s/parallel_studio_xe_2016_update2.tgz" % os.getcwd())  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_update2.tgz" % os.getcwd())
     version('cluster.2016.2', '70be832f2d34c9bf596a5e99d5f2d832',
-        url="file://%s/parallel_studio_xe_2016_update2.tgz" % os.getcwd())  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_update2.tgz" % os.getcwd())
     version('composer.2016.3', '3208eeabee951fc27579177b593cefe9',
-        url="file://%s/parallel_studio_xe_2016_composer_edition_update3.tgz"  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_composer_edition_update3.tgz"
         % os.getcwd())
     version('professional.2016.3', 'eda19bb0d0d19709197ede58f13443f3',
-        url="file://%s/parallel_studio_xe_2016_update3.tgz" % os.getcwd())  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_update3.tgz" % os.getcwd())
     version('cluster.2016.3', 'eda19bb0d0d19709197ede58f13443f3',
-        url="file://%s/parallel_studio_xe_2016_update3.tgz" % os.getcwd())  # NOQA: ignore=E501
+        url="file://%s/parallel_studio_xe_2016_update3.tgz" % os.getcwd())
 
     variant('rpath', default=True, description="Add rpath to .cfg files")
     variant('newdtags', default=False,
@@ -104,7 +104,7 @@ def install(self, spec, prefix):
             if spec.satisfies('+ipp'):
                 components += ipp_components
             if spec.satisfies('+tools') and (spec.satisfies('@cluster') or
-               spec.satisfies('@professional')):
+                                             spec.satisfies('@professional')):
                 components += tool_components
 
         if spec.satisfies('+all'):
@@ -113,10 +113,11 @@ def install(self, spec, prefix):
             self.intel_components = ';'.join(components)
         IntelInstaller.install(self, spec, prefix)
 
-        absbindir = os.path.dirname(os.path.realpath(os.path.join(
-            self.prefix.bin, "icc")))
-        abslibdir = os.path.dirname(os.path.realpath(os.path.join
-                                    (self.prefix.lib, "intel64", "libimf.a")))
+        absbindir = os.path.dirname(
+            os.path.realpath(os.path.join(self.prefix.bin, "icc")))
+        abslibdir = os.path.dirname(
+            os.path.realpath(os.path.join(
+                self.prefix.lib, "intel64", "libimf.a")))
 
         os.symlink(self.global_license_file, os.path.join(absbindir,
                                                           "license.lic"))
@@ -134,31 +135,31 @@ def install(self, spec, prefix):
 
         if (spec.satisfies('+all') or spec.satisfies('+mpi')) and \
                 spec.satisfies('@cluster'):
-                for ifile in os.listdir(os.path.join(self.prefix, "itac")):
-                    if os.path.isdir(os.path.join(self.prefix, "itac", ifile)):
-                        os.symlink(self.global_license_file,
-                                   os.path.join(self.prefix, "itac", ifile,
-                                                "license.lic"))
-                    if os.path.isdir(os.path.join(self.prefix, "itac",
-                                     ifile, "intel64")):
-                        os.symlink(self.global_license_file,
-                                   os.path.join(self.prefix, "itac",
-                                                ifile, "intel64",
-                                                "license.lic"))
-                if spec.satisfies('~newdtags'):
-                    wrappers = ["mpif77", "mpif77", "mpif90", "mpif90",
-                                "mpigcc", "mpigcc", "mpigxx", "mpigxx",
-                                "mpiicc", "mpiicc", "mpiicpc", "mpiicpc",
-                                "mpiifort", "mpiifort"]
-                    wrapper_paths = []
-                    for root, dirs, files in os.walk(spec.prefix):
-                        for name in files:
-                            if name in wrappers:
-                                wrapper_paths.append(os.path.join(spec.prefix,
-                                                                  root, name))
-                    for wrapper in wrapper_paths:
-                        filter_file(r'-Xlinker --enable-new-dtags', r' ',
-                                    wrapper)
+            for ifile in os.listdir(os.path.join(self.prefix, "itac")):
+                if os.path.isdir(os.path.join(self.prefix, "itac", ifile)):
+                    os.symlink(self.global_license_file,
+                               os.path.join(self.prefix, "itac", ifile,
+                                            "license.lic"))
+                if os.path.isdir(os.path.join(self.prefix, "itac",
+                                              ifile, "intel64")):
+                    os.symlink(self.global_license_file,
+                               os.path.join(self.prefix, "itac",
+                                            ifile, "intel64",
+                                            "license.lic"))
+            if spec.satisfies('~newdtags'):
+                wrappers = ["mpif77", "mpif77", "mpif90", "mpif90",
+                            "mpigcc", "mpigcc", "mpigxx", "mpigxx",
+                            "mpiicc", "mpiicc", "mpiicpc", "mpiicpc",
+                            "mpiifort", "mpiifort"]
+                wrapper_paths = []
+                for root, dirs, files in os.walk(spec.prefix):
+                    for name in files:
+                        if name in wrappers:
+                            wrapper_paths.append(os.path.join(spec.prefix,
+                                                              root, name))
+                for wrapper in wrapper_paths:
+                    filter_file(r'-Xlinker --enable-new-dtags', r' ',
+                                wrapper)
 
         if spec.satisfies('+rpath'):
             for compiler_command in ["icc", "icpc", "ifort"]:
diff --git a/var/spack/repos/builtin/packages/intltool/package.py b/var/spack/repos/builtin/packages/intltool/package.py
index 48830c474a..e934734691 100644
--- a/var/spack/repos/builtin/packages/intltool/package.py
+++ b/var/spack/repos/builtin/packages/intltool/package.py
@@ -24,8 +24,12 @@
 ##############################################################################
 from spack import *
 
+
 class Intltool(Package):
-    """intltool is a set of tools to centralize translation of many different file formats using GNU gettext-compatible PO files."""
+    """intltool is a set of tools to centralize translation of many different
+       file formats using GNU gettext-compatible PO files.
+
+    """
     homepage  = 'https://freedesktop.org/wiki/Software/intltool/'
 
     version('0.51.0',    '12e517cac2b57a0121cda351570f1e63')
@@ -37,7 +41,7 @@ def url_for_version(self, version):
     def install(self, spec, prefix):
 
         # configure, build, install:
-        options = ['--prefix=%s' % prefix ]
+        options = ['--prefix=%s' % prefix]
         configure(*options)
         make()
         make('install')
diff --git a/var/spack/repos/builtin/packages/ior/package.py b/var/spack/repos/builtin/packages/ior/package.py
index 6aa72e5cc9..b8825c0fe4 100644
--- a/var/spack/repos/builtin/packages/ior/package.py
+++ b/var/spack/repos/builtin/packages/ior/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class Ior(Package):
     """The IOR software is used for benchmarking parallel file systems
     using POSIX, MPI-IO, or HDF5 interfaces."""
@@ -41,7 +42,6 @@ class Ior(Package):
     depends_on('hdf5+mpi',   when='+hdf5')
     depends_on('netcdf+mpi', when='+ncmpi')
 
-
     def install(self, spec, prefix):
         os.system('./bootstrap')
 
diff --git a/var/spack/repos/builtin/packages/ipopt/package.py b/var/spack/repos/builtin/packages/ipopt/package.py
index 3bd21df89e..d5981e9975 100644
--- a/var/spack/repos/builtin/packages/ipopt/package.py
+++ b/var/spack/repos/builtin/packages/ipopt/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Ipopt(Package):
     """Ipopt (Interior Point OPTimizer, pronounced eye-pea-Opt) is a
        software package for large-scale nonlinear optimization."""
@@ -39,8 +40,8 @@ class Ipopt(Package):
     depends_on("blas")
     depends_on("lapack")
     depends_on("pkg-config", type='build')
-    depends_on("mumps+double~mpi") 
-    
+    depends_on("mumps+double~mpi")
+
     def install(self, spec, prefix):
         # Dependency directories
         blas_dir = spec['blas'].prefix
@@ -55,7 +56,7 @@ def install(self, spec, prefix):
         # By convention, spack links blas & lapack libs to libblas & liblapack
         blas_lib = "-L%s" % blas_dir.lib + " -lblas"
         lapack_lib = "-L%s" % lapack_dir.lib + " -llapack"
-        
+
         configure_args = [
             "--prefix=%s" % prefix,
             "--with-mumps-incdir=%s" % mumps_dir.include,
@@ -65,8 +66,8 @@ def install(self, spec, prefix):
             "--with-blas-lib=%s" % blas_lib,
             "--with-lapack-incdir=%s" % lapack_dir.include,
             "--with-lapack-lib=%s" % lapack_lib
-            ]
-        
+        ]
+
         configure(*configure_args)
 
         # IPOPT does not build correctly in parallel on OS X
diff --git a/var/spack/repos/builtin/packages/isl/package.py b/var/spack/repos/builtin/packages/isl/package.py
index f456f62225..259f4881f5 100644
--- a/var/spack/repos/builtin/packages/isl/package.py
+++ b/var/spack/repos/builtin/packages/isl/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Isl(Package):
     """isl is a thread-safe C library for manipulating sets and
     relations of integer points bounded by affine constraints."""
diff --git a/var/spack/repos/builtin/packages/jdk/package.py b/var/spack/repos/builtin/packages/jdk/package.py
index 794966f1c3..39ec39b66d 100644
--- a/var/spack/repos/builtin/packages/jdk/package.py
+++ b/var/spack/repos/builtin/packages/jdk/package.py
@@ -38,9 +38,9 @@ class Jdk(Package):
     homepage = "http://www.oracle.com/technetwork/java/javase/downloads/index.html"  # noqa: E501
 
     version('8u66-linux-x64', '88f31f3d642c3287134297b8c10e61bf',
-        url="http://download.oracle.com/otn-pub/java/jdk/8u66-b17/jdk-8u66-linux-x64.tar.gz")
+            url="http://download.oracle.com/otn-pub/java/jdk/8u66-b17/jdk-8u66-linux-x64.tar.gz")
     version('8u92-linux-x64', '65a1cc17ea362453a6e0eb4f13be76e4',
-        url="http://download.oracle.com/otn-pub/java/jdk/8u92-b14/jdk-8u92-linux-x64.tar.gz")
+            url="http://download.oracle.com/otn-pub/java/jdk/8u92-b14/jdk-8u92-linux-x64.tar.gz")
 
     # Oracle requires that you accept their License Agreement in order
     # to access the Java packages in download.oracle.com. In order to
diff --git a/var/spack/repos/builtin/packages/jemalloc/package.py b/var/spack/repos/builtin/packages/jemalloc/package.py
index a67754a513..f5a983b7a9 100644
--- a/var/spack/repos/builtin/packages/jemalloc/package.py
+++ b/var/spack/repos/builtin/packages/jemalloc/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Jemalloc(Package):
-    """jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support."""
+    """jemalloc is a general purpose malloc(3) implementation that emphasizes
+       fragmentation avoidance and scalable concurrency support."""
     homepage = "http://www.canonware.com/jemalloc/"
     url      = "https://github.com/jemalloc/jemalloc/releases/download/4.0.4/jemalloc-4.0.4.tar.bz2"
 
@@ -36,7 +38,7 @@ class Jemalloc(Package):
     variant('prof', default=False, description='Enable heap profiling')
 
     def install(self, spec, prefix):
-        configure_args = ['--prefix=%s' % prefix,]
+        configure_args = ['--prefix=%s' % prefix, ]
 
         if '+stats' in spec:
             configure_args.append('--enable-stats')
diff --git a/var/spack/repos/builtin/packages/jpeg/package.py b/var/spack/repos/builtin/packages/jpeg/package.py
index e4a9d8535b..594240d950 100644
--- a/var/spack/repos/builtin/packages/jpeg/package.py
+++ b/var/spack/repos/builtin/packages/jpeg/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Jpeg(Package):
     """libjpeg is a widely used free library with functions for handling the
     JPEG image data format. It implements a JPEG codec (encoding and decoding)
diff --git a/var/spack/repos/builtin/packages/judy/package.py b/var/spack/repos/builtin/packages/judy/package.py
index 8d47767ef0..8b8b261e53 100644
--- a/var/spack/repos/builtin/packages/judy/package.py
+++ b/var/spack/repos/builtin/packages/judy/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class Judy(Package):
-    """A general-purpose dynamic array, associative array and hash-trie - Judy"""
+    """Judy: General-purpose dynamic array, associative array and hash-trie."""
     homepage = "http://judy.sourceforge.net/"
     url      = "http://downloads.sourceforge.net/project/judy/judy/Judy-1.0.5/Judy-1.0.5.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/kealib/package.py b/var/spack/repos/builtin/packages/kealib/package.py
index 7c73c4518b..5346fc8cb9 100644
--- a/var/spack/repos/builtin/packages/kealib/package.py
+++ b/var/spack/repos/builtin/packages/kealib/package.py
@@ -24,20 +24,21 @@
 ##############################################################################
 from spack import *
 
+
 class Kealib(Package):
     """An HDF5 Based Raster File Format
-    
+
     KEALib provides an implementation of the GDAL data model.
     The format supports raster attribute tables, image pyramids,
     meta-data and in-built statistics while also handling very
     large files and compression throughout.
-    
+
     Based on the HDF5 standard, it also provides a base from which
     other formats can be derived and is a good choice for long
     term data archiving. An independent software library (libkea)
     provides complete access to the KEA image format and a GDAL
     driver allowing KEA images to be used from any GDAL supported software.
-    
+
     Development work on this project has been funded by Landcare Research.
     """
     homepage = "http://kealib.org/"
@@ -51,7 +52,8 @@ def install(self, spec, prefix):
         with working_dir('trunk', create=False):
             cmake_args = []
             cmake_args.append("-DCMAKE_INSTALL_PREFIX=%s" % prefix)
-            cmake_args.append("-DHDF5_INCLUDE_DIR=%s" % spec['hdf5'].prefix.include)
+            cmake_args.append("-DHDF5_INCLUDE_DIR=%s" %
+                              spec['hdf5'].prefix.include)
             cmake_args.append("-DHDF5_LIB_PATH=%s" % spec['hdf5'].prefix.lib)
             cmake('.', *cmake_args)
 
diff --git a/var/spack/repos/builtin/packages/kripke/package.py b/var/spack/repos/builtin/packages/kripke/package.py
index d405e9a51d..cf8d2b7e39 100644
--- a/var/spack/repos/builtin/packages/kripke/package.py
+++ b/var/spack/repos/builtin/packages/kripke/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Kripke(Package):
     """Kripke is a simple, scalable, 3D Sn deterministic particle
        transport proxy/mini app.
diff --git a/var/spack/repos/builtin/packages/lcms/package.py b/var/spack/repos/builtin/packages/lcms/package.py
index 434d8e6c98..4d3fc59568 100644
--- a/var/spack/repos/builtin/packages/lcms/package.py
+++ b/var/spack/repos/builtin/packages/lcms/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Lcms(Package):
     """Little cms is a color management library. Implements fast
        transforms between ICC profiles. It is focused on speed, and is
diff --git a/var/spack/repos/builtin/packages/leveldb/package.py b/var/spack/repos/builtin/packages/leveldb/package.py
index 408f1d31c1..f571baa1ce 100644
--- a/var/spack/repos/builtin/packages/leveldb/package.py
+++ b/var/spack/repos/builtin/packages/leveldb/package.py
@@ -22,10 +22,10 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 import glob
 from spack import *
 
+
 class Leveldb(Package):
     """LevelDB is a fast key-value storage library written at Google
     that provides an ordered mapping from string keys to string values."""
diff --git a/var/spack/repos/builtin/packages/libNBC/package.py b/var/spack/repos/builtin/packages/libNBC/package.py
index ed1d0ce96f..414498a37a 100644
--- a/var/spack/repos/builtin/packages/libNBC/package.py
+++ b/var/spack/repos/builtin/packages/libNBC/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libnbc(Package):
     """LibNBC is a prototypic implementation of a nonblocking
     interface for MPI collective operations. Based on ANSI C and
diff --git a/var/spack/repos/builtin/packages/libarchive/package.py b/var/spack/repos/builtin/packages/libarchive/package.py
index f11d732afa..0cf3932957 100644
--- a/var/spack/repos/builtin/packages/libarchive/package.py
+++ b/var/spack/repos/builtin/packages/libarchive/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libarchive(Package):
     """libarchive: C library and command-line tools for reading and
        writing tar, cpio, zip, ISO, and other archive formats."""
diff --git a/var/spack/repos/builtin/packages/libcerf/package.py b/var/spack/repos/builtin/packages/libcerf/package.py
index b30d76f4e9..7fb47f8dcd 100644
--- a/var/spack/repos/builtin/packages/libcerf/package.py
+++ b/var/spack/repos/builtin/packages/libcerf/package.py
@@ -27,9 +27,10 @@
 
 
 class Libcerf(Package):
-    """
-    A self-contained C library providing complex error functions, based on Faddeeva's plasma dispersion function
-    w(z). Also provides Dawson's integral and Voigt's convolution of a Gaussian and a Lorentzian
+    """A self-contained C library providing complex error functions, based
+       on Faddeeva's plasma dispersion function w(z). Also provides Dawson's
+       integral and Voigt's convolution of a Gaussian and a Lorentzian
+
     """
     homepage = "http://sourceforge.net/projects/libcerf"
     url      = "http://downloads.sourceforge.net/project/libcerf/libcerf-1.3.tgz"
diff --git a/var/spack/repos/builtin/packages/libcircle/package.py b/var/spack/repos/builtin/packages/libcircle/package.py
index 75fdb96125..971c29f5f1 100644
--- a/var/spack/repos/builtin/packages/libcircle/package.py
+++ b/var/spack/repos/builtin/packages/libcircle/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Libcircle(Package):
     """libcircle provides an efficient distributed queue on a cluster,
        using self-stabilizing work stealing."""
@@ -32,7 +32,7 @@ class Libcircle(Package):
     homepage = "https://github.com/hpc/libcircle"
 
     version('0.2.1-rc.1', '2b1369a5736457239f908abf88143ec2',
-             url='https://github.com/hpc/libcircle/releases/download/0.2.1-rc.1/libcircle-0.2.1-rc.1.tar.gz')
+            url='https://github.com/hpc/libcircle/releases/download/0.2.1-rc.1/libcircle-0.2.1-rc.1.tar.gz')
 
     depends_on('mpi')
 
diff --git a/var/spack/repos/builtin/packages/libdrm/package.py b/var/spack/repos/builtin/packages/libdrm/package.py
index b05412e588..543eab11b3 100644
--- a/var/spack/repos/builtin/packages/libdrm/package.py
+++ b/var/spack/repos/builtin/packages/libdrm/package.py
@@ -24,12 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Libdrm(Package):
     """A userspace  library for  accessing the  DRM, direct
     rendering  manager, on  Linux,  BSD and  other  operating
     systems that support the  ioctl interface."""
 
-    homepage = "http://dri.freedesktop.org/libdrm/" # no real website...
+    homepage = "http://dri.freedesktop.org/libdrm/"  # no real website...
     url      = "http://dri.freedesktop.org/libdrm/libdrm-2.4.59.tar.gz"
 
     version('2.4.59', '105ac7af1afcd742d402ca7b4eb168b6')
diff --git a/var/spack/repos/builtin/packages/libedit/package.py b/var/spack/repos/builtin/packages/libedit/package.py
index 4366344679..235e7648bc 100644
--- a/var/spack/repos/builtin/packages/libedit/package.py
+++ b/var/spack/repos/builtin/packages/libedit/package.py
@@ -24,12 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class Libedit(Package):
     """An autotools compatible port of the NetBSD editline library"""
     homepage = "http://thrysoee.dk/editline/"
     url      = "http://thrysoee.dk/editline/libedit-20150325-3.1.tar.gz"
 
-    version('3.1', '43cdb5df3061d78b5e9d59109871b4f6', url="http://thrysoee.dk/editline/libedit-20150325-3.1.tar.gz")
+    version('3.1', '43cdb5df3061d78b5e9d59109871b4f6',
+            url="http://thrysoee.dk/editline/libedit-20150325-3.1.tar.gz")
 
     depends_on('ncurses')
 
diff --git a/var/spack/repos/builtin/packages/libelf/package.py b/var/spack/repos/builtin/packages/libelf/package.py
index 1e1deea818..3304d27bdb 100644
--- a/var/spack/repos/builtin/packages/libelf/package.py
+++ b/var/spack/repos/builtin/packages/libelf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libelf(Package):
     """libelf lets you read, modify or create ELF object files in an
        architecture-independent way. The library takes care of size
diff --git a/var/spack/repos/builtin/packages/libevent/package.py b/var/spack/repos/builtin/packages/libevent/package.py
index 3ae427a2eb..65b3a716c0 100644
--- a/var/spack/repos/builtin/packages/libevent/package.py
+++ b/var/spack/repos/builtin/packages/libevent/package.py
@@ -24,11 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Libevent(Package):
     """The libevent API provides a mechanism to execute a callback function
-       when a specific event occurs on a file descriptor or after a timeout has been
-       reached. Furthermore, libevent also support callbacks due to signals or regular
-       timeouts.
+       when a specific event occurs on a file descriptor or after a
+       timeout has been reached. Furthermore, libevent also support
+       callbacks due to signals or regular timeouts.
+
     """
 
     homepage = "http://libevent.org"
@@ -46,7 +48,8 @@ class Libevent(Package):
     version('2.0.13', 'af786b4b3f790c9d3279792edf7867fc')
     version('2.0.12', '42986228baf95e325778ed328a93e070')
 
-    variant('openssl', default=True, description="Build with encryption enabled at the libevent level.")
+    variant('openssl', default=True,
+            description="Build with encryption enabled at the libevent level.")
     depends_on('openssl', when='+openssl')
 
     def install(self, spec, prefix):
diff --git a/var/spack/repos/builtin/packages/libffi/package.py b/var/spack/repos/builtin/packages/libffi/package.py
index 1d3c85c8e0..fa113ee86c 100644
--- a/var/spack/repos/builtin/packages/libffi/package.py
+++ b/var/spack/repos/builtin/packages/libffi/package.py
@@ -24,18 +24,21 @@
 ##############################################################################
 from spack import *
 
+
 class Libffi(Package):
     """The libffi library provides a portable, high level programming
     interface to various calling conventions. This allows a programmer
     to call any function specified by a call interface description at
     run time."""
     homepage = "https://sourceware.org/libffi/"
-    
-    version('3.2.1','83b89587607e3eb65c70d361f13bab43',url = "ftp://sourceware.org/pub/libffi/libffi-3.2.1.tar.gz")
-    #version('3.1', 'f5898b29bbfd70502831a212d9249d10',url = "ftp://sourceware.org/pub/libffi/libffi-3.1.tar.gz") # Has a bug $(lib64) instead of ${lib64} in libffi.pc
+
+    version('3.2.1', '83b89587607e3eb65c70d361f13bab43',
+            url="ftp://sourceware.org/pub/libffi/libffi-3.2.1.tar.gz")
+    # version('3.1', 'f5898b29bbfd70502831a212d9249d10',url =
+    # "ftp://sourceware.org/pub/libffi/libffi-3.1.tar.gz") # Has a bug
+    # $(lib64) instead of ${lib64} in libffi.pc
 
     def install(self, spec, prefix):
         configure("--prefix=%s" % prefix)
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/libgcrypt/package.py b/var/spack/repos/builtin/packages/libgcrypt/package.py
index b1a316cc1b..b556def4d3 100644
--- a/var/spack/repos/builtin/packages/libgcrypt/package.py
+++ b/var/spack/repos/builtin/packages/libgcrypt/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libgcrypt(Package):
     """Libgcrypt is a general purpose cryptographic library based on
        the code from GnuPG. It provides functions for all cryptographic
diff --git a/var/spack/repos/builtin/packages/libgd/package.py b/var/spack/repos/builtin/packages/libgd/package.py
index 938f4f6f3b..acfdebb972 100644
--- a/var/spack/repos/builtin/packages/libgd/package.py
+++ b/var/spack/repos/builtin/packages/libgd/package.py
@@ -27,11 +27,14 @@
 
 
 class Libgd(Package):
-    """
-    GD is an open source code library for the dynamic creation of images by programmers. GD is written in C, and
-    "wrappers" are available for Perl, PHP and other languages. GD creates PNG, JPEG, GIF, WebP, XPM, BMP images,
-    among other formats. GD is commonly used to generate charts, graphics, thumbnails, and most anything else, on the
-    fly. While not restricted to use on the web, the most common applications of GD involve website development.
+    """GD is an open source code library for the dynamic creation of images
+       by programmers. GD is written in C, and "wrappers" are available
+       for Perl, PHP and other languages. GD creates PNG, JPEG, GIF,
+       WebP, XPM, BMP images, among other formats. GD is commonly used to
+       generate charts, graphics, thumbnails, and most anything else, on
+       the fly. While not restricted to use on the web, the most common
+       applications of GD involve website development.
+
     """
 
     homepage = "https://github.com/libgd/libgd"
diff --git a/var/spack/repos/builtin/packages/libgpg-error/package.py b/var/spack/repos/builtin/packages/libgpg-error/package.py
index 3fe82a69e7..a0e2acd516 100644
--- a/var/spack/repos/builtin/packages/libgpg-error/package.py
+++ b/var/spack/repos/builtin/packages/libgpg-error/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class LibgpgError(Package):
     """Libgpg-error is a small library that defines common error
        values for all GnuPG components. Among these are GPG, GPGSM,
diff --git a/var/spack/repos/builtin/packages/libjpeg-turbo/package.py b/var/spack/repos/builtin/packages/libjpeg-turbo/package.py
index d1239ba0d9..6252a88542 100644
--- a/var/spack/repos/builtin/packages/libjpeg-turbo/package.py
+++ b/var/spack/repos/builtin/packages/libjpeg-turbo/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class LibjpegTurbo(Package):
     """libjpeg-turbo is a fork of the original IJG libjpeg which uses
        SIMD to accelerate baseline JPEG compression and
diff --git a/var/spack/repos/builtin/packages/libmng/package.py b/var/spack/repos/builtin/packages/libmng/package.py
index dd0903c4bd..a77aada79c 100644
--- a/var/spack/repos/builtin/packages/libmng/package.py
+++ b/var/spack/repos/builtin/packages/libmng/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libmng(Package):
     """libmng -THE reference library for reading, displaying, writing
        and examining Multiple-Image Network Graphics.  MNG is the animation
@@ -39,7 +40,8 @@ class Libmng(Package):
 
     def patch(self):
         # jpeg requires stdio to beincluded before its headrs.
-        filter_file(r'^(\#include \<jpeglib\.h\>)', '#include<stdio.h>\n\\1', 'libmng_types.h')
+        filter_file(r'^(\#include \<jpeglib\.h\>)',
+                    '#include<stdio.h>\n\\1', 'libmng_types.h')
 
     def install(self, spec, prefix):
         configure("--prefix=%s" % prefix)
diff --git a/var/spack/repos/builtin/packages/libmonitor/package.py b/var/spack/repos/builtin/packages/libmonitor/package.py
index 611e602e2f..f680baa265 100644
--- a/var/spack/repos/builtin/packages/libmonitor/package.py
+++ b/var/spack/repos/builtin/packages/libmonitor/package.py
@@ -28,8 +28,10 @@
 class Libmonitor(Package):
     """Libmonitor is a library for process and thread control."""
     homepage = "https://github.com/HPCToolkit/libmonitor"
-    version('20130218', git='https://github.com/HPCToolkit/libmonitor.git', commit='4f2311e')
-    variant('krellpatch', default=False, description="build with openspeedshop based patch.")
+    version('20130218', git='https://github.com/HPCToolkit/libmonitor.git',
+            commit='4f2311e')
+    variant('krellpatch', default=False,
+            description="build with openspeedshop based patch.")
 
     patch('libmonitorkrell-0000.patch', when='@20130218+krellpatch')
     patch('libmonitorkrell-0001.patch', when='@20130218+krellpatch')
diff --git a/var/spack/repos/builtin/packages/libpciaccess/package.py b/var/spack/repos/builtin/packages/libpciaccess/package.py
index 91cef95cec..a65b81b69b 100644
--- a/var/spack/repos/builtin/packages/libpciaccess/package.py
+++ b/var/spack/repos/builtin/packages/libpciaccess/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os.path
+
 
 class Libpciaccess(Package):
     """Generic PCI access library."""
diff --git a/var/spack/repos/builtin/packages/libpng/package.py b/var/spack/repos/builtin/packages/libpng/package.py
index 951b91eabd..1afe4911e6 100644
--- a/var/spack/repos/builtin/packages/libpng/package.py
+++ b/var/spack/repos/builtin/packages/libpng/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libpng(Package):
     """libpng graphics file format"""
     homepage = "http://www.libpng.org/pub/png/libpng.html"
diff --git a/var/spack/repos/builtin/packages/libpthread-stubs/package.py b/var/spack/repos/builtin/packages/libpthread-stubs/package.py
index 4bcca43c24..ea36758a83 100644
--- a/var/spack/repos/builtin/packages/libpthread-stubs/package.py
+++ b/var/spack/repos/builtin/packages/libpthread-stubs/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class LibpthreadStubs(Package):
     """The libpthread-stubs package provides weak aliases for pthread
        functions not provided in libc or otherwise available by
diff --git a/var/spack/repos/builtin/packages/libsigsegv/package.py b/var/spack/repos/builtin/packages/libsigsegv/package.py
index 14acdcbcd2..715d24bcf7 100644
--- a/var/spack/repos/builtin/packages/libsigsegv/package.py
+++ b/var/spack/repos/builtin/packages/libsigsegv/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libsigsegv(Package):
     """GNU libsigsegv is a library for handling page faults in user mode."""
     homepage = "https://www.gnu.org/software/libsigsegv/"
diff --git a/var/spack/repos/builtin/packages/libsodium/package.py b/var/spack/repos/builtin/packages/libsodium/package.py
index 831a75e659..1c930e21dd 100644
--- a/var/spack/repos/builtin/packages/libsodium/package.py
+++ b/var/spack/repos/builtin/packages/libsodium/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libsodium(Package):
     """Sodium is a modern, easy-to-use software library for encryption,
     decryption, signatures, password hashing and more."""
diff --git a/var/spack/repos/builtin/packages/libtermkey/package.py b/var/spack/repos/builtin/packages/libtermkey/package.py
index c7db959a40..64688505c4 100644
--- a/var/spack/repos/builtin/packages/libtermkey/package.py
+++ b/var/spack/repos/builtin/packages/libtermkey/package.py
@@ -24,17 +24,17 @@
 ##############################################################################
 from spack import *
 
+
 class Libtermkey(Package):
     """Easy keyboard entry processing for terminal programs"""
     homepage = "http://www.leonerd.org.uk/code/libtermkey/"
     url      = "http://www.leonerd.org.uk/code/libtermkey/libtermkey-0.18.tar.gz"
 
-    version('0.18' , '3be2e3e5a851a49cc5e8567ac108b520')
-    version('0.17' , '20edb99e0d95ec1690fe90e6a555ae6d')
-    version('0.16' , '7a24b675aaeb142d30db28e7554987d4')
+    version('0.18', '3be2e3e5a851a49cc5e8567ac108b520')
+    version('0.17', '20edb99e0d95ec1690fe90e6a555ae6d')
+    version('0.16', '7a24b675aaeb142d30db28e7554987d4')
     version('0.15b', '27689756e6c86c56ae454f2ac259bc3d')
-    version('0.14' , 'e08ce30f440f9715c459060e0e048978')
-
+    version('0.14', 'e08ce30f440f9715c459060e0e048978')
 
     def install(self, spec, prefix):
         make()
diff --git a/var/spack/repos/builtin/packages/libtiff/package.py b/var/spack/repos/builtin/packages/libtiff/package.py
index 4b03e7997b..cef9fcaae5 100644
--- a/var/spack/repos/builtin/packages/libtiff/package.py
+++ b/var/spack/repos/builtin/packages/libtiff/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libtiff(Package):
     """libtiff graphics format library"""
     homepage = "http://www.remotesensing.org/libtiff/"
diff --git a/var/spack/repos/builtin/packages/libunwind/package.py b/var/spack/repos/builtin/packages/libunwind/package.py
index 980b765c02..63ab4aec59 100644
--- a/var/spack/repos/builtin/packages/libunwind/package.py
+++ b/var/spack/repos/builtin/packages/libunwind/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libunwind(Package):
     """A portable and efficient C programming interface (API) to determine
        the call-chain of a program."""
diff --git a/var/spack/repos/builtin/packages/libuuid/package.py b/var/spack/repos/builtin/packages/libuuid/package.py
index 0dd32ec77d..553f0dddb8 100644
--- a/var/spack/repos/builtin/packages/libuuid/package.py
+++ b/var/spack/repos/builtin/packages/libuuid/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libuuid(Package):
     """Portable uuid C library"""
     # FIXME: add a proper url for your package's homepage here.
diff --git a/var/spack/repos/builtin/packages/libuv/package.py b/var/spack/repos/builtin/packages/libuv/package.py
index 0d29270b38..dae10809f2 100644
--- a/var/spack/repos/builtin/packages/libuv/package.py
+++ b/var/spack/repos/builtin/packages/libuv/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libuv(Package):
     """Multi-platform library with a focus on asynchronous IO"""
     homepage = "http://libuv.org"
diff --git a/var/spack/repos/builtin/packages/libvterm/package.py b/var/spack/repos/builtin/packages/libvterm/package.py
index e57af273ad..2e1ef99b98 100644
--- a/var/spack/repos/builtin/packages/libvterm/package.py
+++ b/var/spack/repos/builtin/packages/libvterm/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libvterm(Package):
     """An abstract library implementation of a terminal emulator"""
     homepage = "http://www.leonerd.org.uk/code/libvterm/"
diff --git a/var/spack/repos/builtin/packages/libxc/package.py b/var/spack/repos/builtin/packages/libxc/package.py
index 87437373d6..9ea4d1c326 100644
--- a/var/spack/repos/builtin/packages/libxc/package.py
+++ b/var/spack/repos/builtin/packages/libxc/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libxc(Package):
     """Libxc is a library of exchange-correlation functionals for
     density-functional theory."""
@@ -33,7 +34,6 @@ class Libxc(Package):
 
     version('2.2.2', 'd9f90a0d6e36df6c1312b6422280f2ec')
 
-
     def install(self, spec, prefix):
         configure('--prefix=%s' % prefix,
                   '--enable-shared')
diff --git a/var/spack/repos/builtin/packages/libxcb/package.py b/var/spack/repos/builtin/packages/libxcb/package.py
index 586eb970d8..82ddb2742e 100644
--- a/var/spack/repos/builtin/packages/libxcb/package.py
+++ b/var/spack/repos/builtin/packages/libxcb/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libxcb(Package):
     """The X protocol C-language Binding (XCB) is a replacement
     for Xlib featuring a small footprint, latency hiding, direct
@@ -43,11 +44,14 @@ class Libxcb(Package):
     depends_on('libxau')
 
     def patch(self):
-        filter_file('typedef struct xcb_auth_info_t {', 'typedef struct {', 'src/xcb.h')
-
+        filter_file(
+            'typedef struct xcb_auth_info_t {',
+            'typedef struct {',
+            'src/xcb.h')
 
     def install(self, spec, prefix):
-        env['PKG_CONFIG_PATH'] = env['PKG_CONFIG_PATH'] + ':/usr/lib64/pkgconfig'
+        env['PKG_CONFIG_PATH'] = env[
+            'PKG_CONFIG_PATH'] + ':/usr/lib64/pkgconfig'
         configure("--prefix=%s" % prefix)
 
         make()
diff --git a/var/spack/repos/builtin/packages/libxml2/package.py b/var/spack/repos/builtin/packages/libxml2/package.py
index a6dabd2c05..0f4810fa8a 100644
--- a/var/spack/repos/builtin/packages/libxml2/package.py
+++ b/var/spack/repos/builtin/packages/libxml2/package.py
@@ -36,7 +36,9 @@ class Libxml2(Package):
 
     variant('python', default=False, description='Enable Python support')
 
-    extends('python', when='+python', ignore=r'(bin.*$)|(include.*$)|(share.*$)|(lib/libxml2.*$)|(lib/xml2.*$)|(lib/cmake.*$)')
+    extends('python', when='+python',
+            ignore=r'(bin.*$)|(include.*$)|(share.*$)|(lib/libxml2.*$)|'
+            '(lib/xml2.*$)|(lib/cmake.*$)')
     depends_on('zlib')
     depends_on('xz')
 
diff --git a/var/spack/repos/builtin/packages/libxshmfence/package.py b/var/spack/repos/builtin/packages/libxshmfence/package.py
index 6d63ea6426..fe5d5667e9 100644
--- a/var/spack/repos/builtin/packages/libxshmfence/package.py
+++ b/var/spack/repos/builtin/packages/libxshmfence/package.py
@@ -24,11 +24,12 @@
 ##############################################################################
 from spack import *
 
+
 class Libxshmfence(Package):
     """This is a tiny library that exposes a event API on top of Linux
     futexes."""
 
-    homepage = "http://keithp.com/blogs/dri3_extension/" # not really...
+    homepage = "http://keithp.com/blogs/dri3_extension/"  # not really...
     url      = "http://xorg.freedesktop.org/archive/individual/lib/libxshmfence-1.2.tar.gz"
 
     version('1.2', 'f0b30c0fc568b22ec524859ee28556f1')
diff --git a/var/spack/repos/builtin/packages/libxslt/package.py b/var/spack/repos/builtin/packages/libxslt/package.py
index c6c439ad09..47d1c170c6 100644
--- a/var/spack/repos/builtin/packages/libxslt/package.py
+++ b/var/spack/repos/builtin/packages/libxslt/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Libxslt(Package):
     """Libxslt is the XSLT C library developed for the GNOME
        project. XSLT itself is a an XML language to define
diff --git a/var/spack/repos/builtin/packages/llvm-lld/package.py b/var/spack/repos/builtin/packages/llvm-lld/package.py
index 127fe1204d..1dcf88e3c0 100644
--- a/var/spack/repos/builtin/packages/llvm-lld/package.py
+++ b/var/spack/repos/builtin/packages/llvm-lld/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class LlvmLld(Package):
     """lld - The LLVM Linker
        lld is a new set of modular code for creating linker tools."""
diff --git a/var/spack/repos/builtin/packages/llvm/package.py b/var/spack/repos/builtin/packages/llvm/package.py
index e79c123a7e..61ea8daac4 100644
--- a/var/spack/repos/builtin/packages/llvm/package.py
+++ b/var/spack/repos/builtin/packages/llvm/package.py
@@ -23,32 +23,51 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os, glob
+import os
 
 
 class Llvm(Package):
     """The LLVM Project is a collection of modular and reusable compiler and
-       toolchain technologies. Despite its name, LLVM has little to do with
-       traditional virtual machines, though it does provide helpful libraries
-       that can be used to build them. The name "LLVM" itself is not an acronym;
-       it is the full name of the project.
+       toolchain technologies. Despite its name, LLVM has little to do
+       with traditional virtual machines, though it does provide helpful
+       libraries that can be used to build them. The name "LLVM" itself
+       is not an acronym; it is the full name of the project.
+
     """
     homepage = 'http://llvm.org/'
     url = 'http://llvm.org/releases/3.7.1/llvm-3.7.1.src.tar.xz'
 
-    version('3.0', 'a8e5f5f1c1adebae7b4a654c376a6005', url='http://llvm.org/releases/3.0/llvm-3.0.tar.gz') # currently required by mesa package
+    # currently required by mesa package
+    version('3.0', 'a8e5f5f1c1adebae7b4a654c376a6005',
+            url='http://llvm.org/releases/3.0/llvm-3.0.tar.gz')
 
-    variant('debug', default=False, description="Build a debug version of LLVM, this increases binary size by an order of magnitude, make sure you have 20-30gb of space available to build this")
-    variant('clang', default=True, description="Build the LLVM C/C++/Objective-C compiler frontend")
+    variant('debug', default=False,
+            description="Build a debug version of LLVM, this increases "
+            "binary size by an order of magnitude, make sure you have "
+            "20-30gb of space available to build this")
+    variant('clang', default=True,
+            description="Build the LLVM C/C++/Objective-C compiler frontend")
     variant('lldb', default=True, description="Build the LLVM debugger")
-    variant('internal_unwind', default=True, description="Build the libcxxabi libunwind")
-    variant('polly', default=True, description="Build the LLVM polyhedral optimization plugin, only builds for 3.7.0+")
-    variant('libcxx', default=True, description="Build the LLVM C++ standard library")
-    variant('compiler-rt', default=True, description="Build the LLVM compiler runtime, including sanitizers")
-    variant('gold', default=True, description="Add support for LTO with the gold linker plugin")
-    variant('shared_libs', default=False, description="Build all components as shared libraries, faster, less memory to build, less stable")
-    variant('link_dylib', default=False, description="Build and link the libLLVM shared library rather than static")
-    variant('all_targets', default=True, description="Build all supported targets, default targets <current arch>,NVPTX,AMDGPU,CppBackend")
+    variant('internal_unwind', default=True,
+            description="Build the libcxxabi libunwind")
+    variant('polly', default=True,
+            description="Build the LLVM polyhedral optimization plugin, "
+            "only builds for 3.7.0+")
+    variant('libcxx', default=True,
+            description="Build the LLVM C++ standard library")
+    variant('compiler-rt', default=True,
+            description="Build LLVM compiler runtime, including sanitizers")
+    variant('gold', default=True,
+            description="Add support for LTO with the gold linker plugin")
+    variant('shared_libs', default=False,
+            description="Build all components as shared libraries, faster, "
+            "less memory to build, less stable")
+    variant('link_dylib', default=False,
+            description="Build and link the libLLVM shared library rather "
+            "than static")
+    variant('all_targets', default=True,
+            description="Build all supported targets, default targets "
+            "<current arch>,NVPTX,AMDGPU,CppBackend")
 
     # Build dependency
     depends_on('cmake@2.8.12.2:', type='build')
@@ -68,147 +87,147 @@ class Llvm(Package):
     depends_on('gmp', when='@:3.6.999 +polly')
     depends_on('isl', when='@:3.6.999 +polly')
 
-    base_url =  'http://llvm.org/releases/%%(version)s/%(pkg)s-%%(version)s.src.tar.xz'
-    llvm_url = base_url % { 'pkg' : 'llvm'}
+    base_url = 'http://llvm.org/releases/%%(version)s/%(pkg)s-%%(version)s.src.tar.xz'
+    llvm_url = base_url % {'pkg': 'llvm'}
 
     resources = {
-                    'compiler-rt' : {
-                        'url' : base_url % { 'pkg' : 'compiler-rt'},
-                        'destination' : 'projects',
-                        'placement' : 'compiler-rt',
-                    },
-                    'openmp' : {
-                        'url' : base_url % { 'pkg' : 'openmp'},
-                        'destination' : 'projects',
-                        'placement' : 'openmp',
-                    },
-                    'libcxx' : {
-                        'url' : base_url % { 'pkg' : 'libcxx'},
-                        'destination' : 'projects',
-                        'placement' : 'libcxx',
-                    },
-                    'libcxxabi' : {
-                        'url' :  base_url % { 'pkg' : 'libcxxabi'},
-                        'destination' : 'projects',
-                        'placement' : 'libcxxabi',
-                    },
-                    'clang' : {
-                        'url' :  base_url % { 'pkg' : 'cfe'},
-                        'destination' : 'tools',
-                        'placement' : 'clang',
-                    },
-                    'clang-tools-extra' : {
-                        'url' :  base_url % { 'pkg' : 'clang-tools-extra'},
-                        'destination' : 'tools/clang/tools',
-                        'placement' : 'extra',
-                    },
-                    'lldb' : {
-                        'url' :  base_url % { 'pkg' : 'lldb'},
-                        'destination' : 'tools',
-                        'placement' : 'lldb',
-                    },
-                    'polly' : {
-                        'url' :  base_url % { 'pkg' : 'polly'},
-                        'destination' : 'tools',
-                        'placement' : 'polly',
-                    },
-                    'llvm-libunwind' : {
-                        'url' :  base_url % { 'pkg' : 'libunwind'},
-                        'destination' : 'projects',
-                        'placement' : 'libunwind',
-                    },
-                }
+        'compiler-rt': {
+            'url': base_url % {'pkg': 'compiler-rt'},
+            'destination': 'projects',
+            'placement': 'compiler-rt',
+        },
+        'openmp': {
+            'url': base_url % {'pkg': 'openmp'},
+            'destination': 'projects',
+            'placement': 'openmp',
+        },
+        'libcxx': {
+            'url': base_url % {'pkg': 'libcxx'},
+            'destination': 'projects',
+            'placement': 'libcxx',
+        },
+        'libcxxabi': {
+            'url':  base_url % {'pkg': 'libcxxabi'},
+            'destination': 'projects',
+            'placement': 'libcxxabi',
+        },
+        'clang': {
+            'url':  base_url % {'pkg': 'cfe'},
+            'destination': 'tools',
+            'placement': 'clang',
+        },
+        'clang-tools-extra': {
+            'url':  base_url % {'pkg': 'clang-tools-extra'},
+            'destination': 'tools/clang/tools',
+            'placement': 'extra',
+        },
+        'lldb': {
+            'url':  base_url % {'pkg': 'lldb'},
+            'destination': 'tools',
+            'placement': 'lldb',
+        },
+        'polly': {
+            'url':  base_url % {'pkg': 'polly'},
+            'destination': 'tools',
+            'placement': 'polly',
+        },
+        'llvm-libunwind': {
+            'url':  base_url % {'pkg': 'libunwind'},
+            'destination': 'projects',
+            'placement': 'libunwind',
+        },
+    }
     releases = [
-                  {
-                    'version' : 'trunk',
-                    'repo' : 'http://llvm.org/svn/llvm-project/llvm/trunk',
-                    'resources' : {
-                        'compiler-rt' : 'http://llvm.org/svn/llvm-project/compiler-rt/trunk',
-                        'openmp' : 'http://llvm.org/svn/llvm-project/openmp/trunk',
-                        'polly' : 'http://llvm.org/svn/llvm-project/polly/trunk',
-                        'libcxx' : 'http://llvm.org/svn/llvm-project/libcxx/trunk',
-                        'libcxxabi' : 'http://llvm.org/svn/llvm-project/libcxxabi/trunk',
-                        'clang' : 'http://llvm.org/svn/llvm-project/cfe/trunk',
-                        'clang-tools-extra' : 'http://llvm.org/svn/llvm-project/clang-tools-extra/trunk',
-                        'lldb' : 'http://llvm.org/svn/llvm-project/lldb/trunk',
-                        'llvm-libunwind' : 'http://llvm.org/svn/llvm-project/libunwind/trunk',
-                        }
-                  },
-                  {
-                    'version' : '3.8.0',
-                    'md5':'07a7a74f3c6bd65de4702bf941b511a0',
-                    'resources' : {
-                        'compiler-rt' : 'd6fcbe14352ffb708e4d1ac2e48bb025',
-                        'openmp' : '8fd7cc35d48051613cf1e750e9f22e40',
-                        'polly' : '1b3b20f52d34a4024e21a4ea7112caa7',
-                        'libcxx' : 'd6e0bdbbee39f7907ad74fd56d03b88a',
-                        'libcxxabi' : 'bbe6b4d72c7c5978550d370af529bcf7',
-                        'clang' : 'cc99e7019bb74e6459e80863606250c5',
-                        'clang-tools-extra' : 'c2344f50e0eea0b402f0092a80ddc036',
-                        'lldb' : 'a5da35ed9cc8c8817ee854e3dbfba00e',
-                        'llvm-libunwind' : '162ade468607f153cca12be90b5194fa',
-                        }
-                  },
-                  {
-                    'version' : '3.7.1',
-                    'md5':'bf8b3a2c79e61212c5409041dfdbd319',
-                    'resources' : {
-                        'compiler-rt' : '1c6975daf30bb3b0473b53c3a1a6ff01',
-                        'openmp' : 'b4ad08cda4e5c22e42b66062b140438e',
-                        'polly' : '3a2a7367002740881637f4d47bca4dc3',
-                        'libcxx' : 'f9c43fa552a10e14ff53b94d04bea140',
-                        'libcxxabi' : '52d925afac9f97e9dcac90745255c169',
-                        'clang' : '0acd026b5529164197563d135a8fd83e',
-                        'clang-tools-extra' : '5d49ff745037f061a7c86aeb6a24c3d2',
-                        'lldb' : 'a106d8a0d21fc84d76953822fbaf3398',
-                        'llvm-libunwind' : '814bd52c9247c5d04629658fbcb3ab8c',
-                        }
-                  },
-                  {
-                    'version' : '3.7.0',
-                    'md5':'b98b9495e5655a672d6cb83e1a180f8e',
-                    'resources' : {
-                        'compiler-rt' : '383c10affd513026f08936b5525523f5',
-                        'openmp' : 'f482c86fdead50ba246a1a2b0bbf206f',
-                        'polly' : '32f93ffc9cc7e042df22089761558f8b',
-                        'libcxx' : '46aa5175cbe1ad42d6e9c995968e56dd',
-                        'libcxxabi' : '5aa769e2fca79fa5335cfae8f6258772',
-                        'clang' : '8f9d27335e7331cf0a4711e952f21f01',
-                        'clang-tools-extra' : 'd5a87dacb65d981a427a536f6964642e',
-                        'lldb' : 'e5931740400d1dc3e7db4c7ba2ceff68',
-                        'llvm-libunwind' : '9a75392eb7eb8ed5c0840007e212baf5',
-                        }
-                  },
-                  {
-                    'version' : '3.6.2',
-                    'md5':'0c1ee3597d75280dee603bae9cbf5cc2',
-                    'resources' : {
-                        'compiler-rt' : 'e3bc4eb7ba8c39a6fe90d6c988927f3c',
-                        'openmp' : '65dd5863b9b270960a96817e9152b123',
-                        'libcxx' : '22214c90697636ef960a49aef7c1823a',
-                        'libcxxabi' : '17518e361e4e228f193dd91e8ef54ba2',
-                        'clang' : 'ff862793682f714bb7862325b9c06e20',
-                        'clang-tools-extra' : '3ebc1dc41659fcec3db1b47d81575e06',
-                        'lldb' : '51e5eb552f777b950bb0ff326e60d5f0',
-                        }
-                  },
-                  {
-                    'version' : '3.5.1',
-                    'md5':'2d3d8004f38852aa679e5945b8ce0b14',
-                    'resources' : {
-                        'compiler-rt' : 'd626cfb8a9712cb92b820798ab5bc1f8',
-                        'openmp' : '121ddb10167d7fc38b1f7e4b029cf059',
-                        'libcxx' : '406f09b1dab529f3f7879f4d548329d2',
-                        'libcxxabi' : 'b22c707e8d474a99865ad3c521c3d464',
-                        'clang' : '93f9532f8f7e6f1d8e5c1116907051cb',
-                        'clang-tools-extra' : 'f13f31ed3038acadc6fa63fef812a246',
-                        'lldb' : 'cc5ea8a414c62c33e760517f8929a204',
-                        }
-                  },
-               ]
+        {
+            'version': 'trunk',
+            'repo': 'http://llvm.org/svn/llvm-project/llvm/trunk',
+                    'resources': {
+                        'compiler-rt': 'http://llvm.org/svn/llvm-project/compiler-rt/trunk',
+                        'openmp': 'http://llvm.org/svn/llvm-project/openmp/trunk',
+                        'polly': 'http://llvm.org/svn/llvm-project/polly/trunk',
+                        'libcxx': 'http://llvm.org/svn/llvm-project/libcxx/trunk',
+                        'libcxxabi': 'http://llvm.org/svn/llvm-project/libcxxabi/trunk',
+                        'clang': 'http://llvm.org/svn/llvm-project/cfe/trunk',
+                        'clang-tools-extra': 'http://llvm.org/svn/llvm-project/clang-tools-extra/trunk',
+                        'lldb': 'http://llvm.org/svn/llvm-project/lldb/trunk',
+                        'llvm-libunwind': 'http://llvm.org/svn/llvm-project/libunwind/trunk',
+                    }
+        },
+        {
+            'version': '3.8.0',
+            'md5': '07a7a74f3c6bd65de4702bf941b511a0',
+            'resources': {
+                'compiler-rt': 'd6fcbe14352ffb708e4d1ac2e48bb025',
+                'openmp': '8fd7cc35d48051613cf1e750e9f22e40',
+                'polly': '1b3b20f52d34a4024e21a4ea7112caa7',
+                'libcxx': 'd6e0bdbbee39f7907ad74fd56d03b88a',
+                'libcxxabi': 'bbe6b4d72c7c5978550d370af529bcf7',
+                'clang': 'cc99e7019bb74e6459e80863606250c5',
+                'clang-tools-extra': 'c2344f50e0eea0b402f0092a80ddc036',
+                'lldb': 'a5da35ed9cc8c8817ee854e3dbfba00e',
+                        'llvm-libunwind': '162ade468607f153cca12be90b5194fa',
+            }
+        },
+        {
+            'version': '3.7.1',
+            'md5': 'bf8b3a2c79e61212c5409041dfdbd319',
+            'resources': {
+                'compiler-rt': '1c6975daf30bb3b0473b53c3a1a6ff01',
+                'openmp': 'b4ad08cda4e5c22e42b66062b140438e',
+                'polly': '3a2a7367002740881637f4d47bca4dc3',
+                'libcxx': 'f9c43fa552a10e14ff53b94d04bea140',
+                'libcxxabi': '52d925afac9f97e9dcac90745255c169',
+                'clang': '0acd026b5529164197563d135a8fd83e',
+                'clang-tools-extra': '5d49ff745037f061a7c86aeb6a24c3d2',
+                'lldb': 'a106d8a0d21fc84d76953822fbaf3398',
+                        'llvm-libunwind': '814bd52c9247c5d04629658fbcb3ab8c',
+            }
+        },
+        {
+            'version': '3.7.0',
+            'md5': 'b98b9495e5655a672d6cb83e1a180f8e',
+            'resources': {
+                'compiler-rt': '383c10affd513026f08936b5525523f5',
+                'openmp': 'f482c86fdead50ba246a1a2b0bbf206f',
+                'polly': '32f93ffc9cc7e042df22089761558f8b',
+                'libcxx': '46aa5175cbe1ad42d6e9c995968e56dd',
+                'libcxxabi': '5aa769e2fca79fa5335cfae8f6258772',
+                'clang': '8f9d27335e7331cf0a4711e952f21f01',
+                'clang-tools-extra': 'd5a87dacb65d981a427a536f6964642e',
+                'lldb': 'e5931740400d1dc3e7db4c7ba2ceff68',
+                        'llvm-libunwind': '9a75392eb7eb8ed5c0840007e212baf5',
+            }
+        },
+        {
+            'version': '3.6.2',
+            'md5': '0c1ee3597d75280dee603bae9cbf5cc2',
+            'resources': {
+                'compiler-rt': 'e3bc4eb7ba8c39a6fe90d6c988927f3c',
+                'openmp': '65dd5863b9b270960a96817e9152b123',
+                'libcxx': '22214c90697636ef960a49aef7c1823a',
+                'libcxxabi': '17518e361e4e228f193dd91e8ef54ba2',
+                'clang': 'ff862793682f714bb7862325b9c06e20',
+                'clang-tools-extra': '3ebc1dc41659fcec3db1b47d81575e06',
+                'lldb': '51e5eb552f777b950bb0ff326e60d5f0',
+            }
+        },
+        {
+            'version': '3.5.1',
+            'md5': '2d3d8004f38852aa679e5945b8ce0b14',
+            'resources': {
+                'compiler-rt': 'd626cfb8a9712cb92b820798ab5bc1f8',
+                'openmp': '121ddb10167d7fc38b1f7e4b029cf059',
+                'libcxx': '406f09b1dab529f3f7879f4d548329d2',
+                'libcxxabi': 'b22c707e8d474a99865ad3c521c3d464',
+                'clang': '93f9532f8f7e6f1d8e5c1116907051cb',
+                'clang-tools-extra': 'f13f31ed3038acadc6fa63fef812a246',
+                'lldb': 'cc5ea8a414c62c33e760517f8929a204',
+            }
+        },
+    ]
 
     for release in releases:
-        if release['version'] == 'trunk' :
+        if release['version'] == 'trunk':
             version(release['version'], svn=release['repo'])
 
             for name, repo in release['resources'].items():
@@ -230,18 +249,19 @@ class Llvm(Package):
 
     def install(self, spec, prefix):
         env['CXXFLAGS'] = self.compiler.cxx11_flag
-        cmake_args = [ arg for arg in std_cmake_args if 'BUILD_TYPE' not in arg ]
+        cmake_args = [arg for arg in std_cmake_args if 'BUILD_TYPE' not in arg]
 
         build_type = 'RelWithDebInfo' if '+debug' in spec else 'Release'
         cmake_args.extend([
-                '..',
-                '-DCMAKE_BUILD_TYPE=' + build_type,
-                '-DLLVM_REQUIRES_RTTI:BOOL=ON',
-                '-DCLANG_DEFAULT_OPENMP_RUNTIME:STRING=libomp',
-                '-DPYTHON_EXECUTABLE:PATH=%s/bin/python' % spec['python'].prefix ])
+            '..',
+            '-DCMAKE_BUILD_TYPE=' + build_type,
+            '-DLLVM_REQUIRES_RTTI:BOOL=ON',
+            '-DCLANG_DEFAULT_OPENMP_RUNTIME:STRING=libomp',
+            '-DPYTHON_EXECUTABLE:PATH=%s/bin/python' % spec['python'].prefix])
 
         if '+gold' in spec:
-            cmake_args.append('-DLLVM_BINUTILS_INCDIR=' + os.path.join( spec['binutils'].prefix, 'include'))
+            cmake_args.append('-DLLVM_BINUTILS_INCDIR=' +
+                              os.path.join(spec['binutils'].prefix, 'include'))
         if '+polly' in spec:
             cmake_args.append('-DLINK_POLLY_INTO_TOOLS:Bool=ON')
         else:
@@ -265,7 +285,7 @@ def install(self, spec, prefix):
         if '+link_dylib' in spec:
             cmake_args.append('-DLLVM_LINK_LLVM_DYLIB:Bool=ON')
 
-        if '+all_targets' not in spec: # all is default on cmake
+        if '+all_targets' not in spec:  # all is default on cmake
             targets = ['CppBackend', 'NVPTX', 'AMDGPU']
             if 'x86' in spec.architecture.target.lower():
                 targets.append('X86')
@@ -279,13 +299,16 @@ def install(self, spec, prefix):
                   'power' in spec.architecture.target.lower()):
                 targets.append('PowerPC')
 
-            cmake_args.append('-DLLVM_TARGETS_TO_BUILD:Bool=' + ';'.join(targets))
+            cmake_args.append(
+                '-DLLVM_TARGETS_TO_BUILD:Bool=' + ';'.join(targets))
 
-        if  '+clang' not in spec:
+        if '+clang' not in spec:
             if '+clang_extra' in spec:
-                raise SpackException('The clang_extra variant requires the clang variant to be selected')
+                raise SpackException(
+                    'The clang_extra variant requires the `+clang` variant.')
             if '+lldb' in spec:
-                raise SpackException('The lldb variant requires the clang variant to be selected')
+                raise SpackException(
+                    'The lldb variant requires the `+clang` variant')
 
         with working_dir('spack-build', create=True):
             cmake(*cmake_args)
diff --git a/var/spack/repos/builtin/packages/lmdb/package.py b/var/spack/repos/builtin/packages/lmdb/package.py
index 79c020b2df..8c6c23d8dc 100644
--- a/var/spack/repos/builtin/packages/lmdb/package.py
+++ b/var/spack/repos/builtin/packages/lmdb/package.py
@@ -25,12 +25,12 @@
 import os
 from spack import *
 
+
 class Lmdb(Package):
     """Read-only mirror of official repo on openldap.org. Issues and
     pull requests here are ignored. Use OpenLDAP ITS for issues.
     http://www.openldap.org/software/repo.html"""
 
-
     homepage = "http://www.openldap.org/software/repo.html"
     url      = "https://github.com/LMDB/lmdb/archive/LMDB_0.9.16.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/lwgrp/package.py b/var/spack/repos/builtin/packages/lwgrp/package.py
index 471098c873..9322d69b9b 100644
--- a/var/spack/repos/builtin/packages/lwgrp/package.py
+++ b/var/spack/repos/builtin/packages/lwgrp/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Lwgrp(Package):
     """Thie light-weight group library provides process group
        representations using O(log N) space and time."""
diff --git a/var/spack/repos/builtin/packages/lwm2/package.py b/var/spack/repos/builtin/packages/lwm2/package.py
index 340474b47e..063204b84a 100644
--- a/var/spack/repos/builtin/packages/lwm2/package.py
+++ b/var/spack/repos/builtin/packages/lwm2/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Lwm2(Package):
     """LWM2: Light Weight Measurement Module.  This is a PMPI module
        that can collect a number of time-sliced MPI and POSIX I/O
diff --git a/var/spack/repos/builtin/packages/m4/package.py b/var/spack/repos/builtin/packages/m4/package.py
index dcb306dcd3..b3bb5e61ce 100644
--- a/var/spack/repos/builtin/packages/m4/package.py
+++ b/var/spack/repos/builtin/packages/m4/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class M4(Package):
     """GNU M4 is an implementation of the traditional Unix macro processor."""
     homepage = "https://www.gnu.org/software/m4/m4.html"
@@ -33,14 +34,16 @@ class M4(Package):
 
     patch('pgi.patch', when='@1.4.17')
 
-    variant('sigsegv', default=True, description="Build the libsigsegv dependency")
+    variant('sigsegv', default=True,
+            description="Build the libsigsegv dependency")
 
     depends_on('libsigsegv', when='+sigsegv')
 
     def install(self, spec, prefix):
         configure_args = []
         if 'libsigsegv' in spec:
-            configure_args.append('--with-libsigsegv-prefix=%s' % spec['libsigsegv'].prefix)
+            configure_args.append('--with-libsigsegv-prefix=%s' %
+                                  spec['libsigsegv'].prefix)
         else:
             configure_args.append('--without-libsigsegv-prefix')
 
diff --git a/var/spack/repos/builtin/packages/mbedtls/package.py b/var/spack/repos/builtin/packages/mbedtls/package.py
index 13c0ce768f..e1a42c0d9a 100644
--- a/var/spack/repos/builtin/packages/mbedtls/package.py
+++ b/var/spack/repos/builtin/packages/mbedtls/package.py
@@ -24,17 +24,21 @@
 ##############################################################################
 from spack import *
 
+
 class Mbedtls(Package):
-    """
-    mbed TLS (formerly known as PolarSSL) makes it trivially easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) products, facilitating this functionality with a minimal coding footprint.
+    """mbed TLS (formerly known as PolarSSL) makes it trivially easy for
+       developers to include cryptographic and SSL/TLS capabilities in
+       their (embedded) products, facilitating this functionality with a
+       minimal coding footprint.
+
     """
     homepage = "https://tls.mbed.org"
     url      = "https://github.com/ARMmbed/mbedtls/archive/mbedtls-2.2.1.tar.gz"
 
-    version('2.2.1' , '73a38f96898d6d03e32f55dd9f9a67be')
-    version('2.2.0' , 'eaf4586c1ef93ae872e606b6c1203942')
-    version('2.1.4' , '40cdf67b6c6d92c9cbcfd552d39ea3ae')
-    version('2.1.3' , '7eb4cf1dfa68578a2c8dbd0b6fa752dd')
+    version('2.2.1', '73a38f96898d6d03e32f55dd9f9a67be')
+    version('2.2.0', 'eaf4586c1ef93ae872e606b6c1203942')
+    version('2.1.4', '40cdf67b6c6d92c9cbcfd552d39ea3ae')
+    version('2.1.3', '7eb4cf1dfa68578a2c8dbd0b6fa752dd')
     version('1.3.16', '4144d7320c691f721aeb9e67a1bc38e0')
 
     depends_on('cmake', type='build')
diff --git a/var/spack/repos/builtin/packages/memaxes/package.py b/var/spack/repos/builtin/packages/memaxes/package.py
index 31672abaec..ffad167788 100644
--- a/var/spack/repos/builtin/packages/memaxes/package.py
+++ b/var/spack/repos/builtin/packages/memaxes/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Memaxes(Package):
     """MemAxes is a visualizer for sampled memory trace data."""
 
diff --git a/var/spack/repos/builtin/packages/mesa/package.py b/var/spack/repos/builtin/packages/mesa/package.py
index 3bad17b5cb..299b9a9267 100644
--- a/var/spack/repos/builtin/packages/mesa/package.py
+++ b/var/spack/repos/builtin/packages/mesa/package.py
@@ -24,13 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Mesa(Package):
     """Mesa is an open-source implementation of the OpenGL
     specification - a system for rendering interactive 3D graphics."""
 
     homepage = "http://www.mesa3d.org"
     url      = "ftp://ftp.freedesktop.org/pub/mesa/older-versions/8.x/8.0.5/MesaLib-8.0.5.tar.gz"
-    # url      = "ftp://ftp.freedesktop.org/pub/mesa/10.4.4/MesaLib-10.4.4.tar.gz"
 
     # version('10.4.4', '8d863a3c209bf5116b2babfccccc68ce')
     version('8.0.5', 'cda5d101f43b8784fa60bdeaca4056f2')
@@ -50,7 +50,6 @@ class Mesa(Package):
     # depends_on("libxcb")
     # depends_on("libxshmfence")
 
-
     def install(self, spec, prefix):
         configure("--prefix=%s" % prefix)
 
diff --git a/var/spack/repos/builtin/packages/metis/package.py b/var/spack/repos/builtin/packages/metis/package.py
index 2180f2cce2..9f8ed5c9e8 100644
--- a/var/spack/repos/builtin/packages/metis/package.py
+++ b/var/spack/repos/builtin/packages/metis/package.py
@@ -43,12 +43,16 @@ class Metis(Package):
     version('5.0.2', 'acb521a4e8c2e6dd559a7f9abd0468c5')
     version('4.0.3', 'd3848b454532ef18dc83e4fb160d1e10')
 
-    variant('shared', default=True, description='Enables the build of shared libraries')
-    variant('debug', default=False, description='Builds the library in debug mode')
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
+    variant('debug', default=False,
+            description='Builds the library in debug mode')
     variant('gdb', default=False, description='Enables gdb support')
 
-    variant('idx64', default=False, description='Use int64_t as default index type')
-    variant('real64', default=False, description='Use double precision floating point types')
+    variant('idx64', default=False,
+            description='Use int64_t as default index type')
+    variant('real64', default=False,
+            description='Use double precision floating point types')
 
     depends_on('cmake@2.8:', when='@5:', type='build')
 
diff --git a/var/spack/repos/builtin/packages/mfem/package.py b/var/spack/repos/builtin/packages/mfem/package.py
index e7a1d96388..fd91f705eb 100644
--- a/var/spack/repos/builtin/packages/mfem/package.py
+++ b/var/spack/repos/builtin/packages/mfem/package.py
@@ -23,7 +23,9 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import glob, string
+import glob
+import string
+
 
 class Mfem(Package):
     """Free, lightweight, scalable C++ library for finite element methods."""
@@ -31,10 +33,12 @@ class Mfem(Package):
     homepage = 'http://www.mfem.org'
     url      = 'https://github.com/mfem/mfem'
 
-    version('3.2', '2938c3deed4ec4f7fd5b5f5cfe656845282e86e2dcd477d292390058b7b94340',
+    version('3.2',
+            '2938c3deed4ec4f7fd5b5f5cfe656845282e86e2dcd477d292390058b7b94340',
             url='http://goo.gl/Y9T75B', expand=False, preferred=True)
 
-    version('3.1', '841ea5cf58de6fae4de0f553b0e01ebaab9cd9c67fa821e8a715666ecf18fc57',
+    version('3.1',
+            '841ea5cf58de6fae4de0f553b0e01ebaab9cd9c67fa821e8a715666ecf18fc57',
             url='http://goo.gl/xrScXn', expand=False)
 #    version('3.1', git='https://github.com/mfem/mfem.git',
 #            commit='dbae60fe32e071989b52efaaf59d7d0eb2a3b574')
@@ -71,8 +75,9 @@ def check_variants(self, spec):
         if '+suite-sparse' in spec and ('+metis' not in spec or
                                         '+lapack' not in spec):
             raise InstallError('mfem+suite-sparse must be built with ' +
-            '+metis and +lapack!')
-        if 'metis@5:' in spec and '%clang' in spec and ('^cmake %gcc' not in spec):
+                               '+metis and +lapack!')
+        if 'metis@5:' in spec and '%clang' in spec and (
+                '^cmake %gcc' not in spec):
             raise InstallError('To work around CMake bug with clang, must ' +
                                'build mfem with mfem[+variants] %clang ' +
                                '^cmake %gcc to force CMake to build with gcc')
@@ -86,15 +91,17 @@ def install(self, spec, prefix):
         if '+lapack' in spec:
             lapack_lib = '-L{0} -llapack -L{1} -lblas'.format(
                 spec['lapack'].prefix.lib, spec['blas'].prefix.lib)
-            options.extend(['MFEM_USE_LAPACK=YES',
-                            'LAPACK_OPT=-I%s' % spec['lapack'].prefix.include,
-                            'LAPACK_LIB=%s' % lapack_lib])
+            options.extend([
+                'MFEM_USE_LAPACK=YES',
+                'LAPACK_OPT=-I%s' % spec['lapack'].prefix.include,
+                'LAPACK_LIB=%s' % lapack_lib])
 
         if '+hypre' in spec:
-            options.extend(['HYPRE_DIR=%s' % spec['hypre'].prefix,
-                            'HYPRE_OPT=-I%s' % spec['hypre'].prefix.include,
-                            'HYPRE_LIB=-L%s' % spec['hypre'].prefix.lib +
-                            ' -lHYPRE'])
+            options.extend([
+                'HYPRE_DIR=%s' % spec['hypre'].prefix,
+                'HYPRE_OPT=-I%s' % spec['hypre'].prefix.include,
+                'HYPRE_LIB=-L%s' % spec['hypre'].prefix.lib +
+                ' -lHYPRE'])
 
         if '+metis' in spec:
             metis_lib = '-L%s -lmetis' % spec['metis'].prefix.lib
@@ -102,22 +109,26 @@ def install(self, spec, prefix):
                 metis_str = 'MFEM_USE_METIS_5=YES'
             else:
                 metis_str = 'MFEM_USE_METIS_5=NO'
-            options.extend([metis_str,
-                            'METIS_DIR=%s' % spec['metis'].prefix,
-                            'METIS_OPT=-I%s' % spec['metis'].prefix.include,
-                            'METIS_LIB=%s' % metis_lib])
+            options.extend([
+                metis_str,
+                'METIS_DIR=%s' % spec['metis'].prefix,
+                'METIS_OPT=-I%s' % spec['metis'].prefix.include,
+                'METIS_LIB=%s' % metis_lib])
 
-        if '+mpi' in spec: options.extend(['MFEM_USE_MPI=YES'])
+        if '+mpi' in spec:
+            options.extend(['MFEM_USE_MPI=YES'])
 
         if '+suite-sparse' in spec:
             ssp = spec['suite-sparse'].prefix
             ss_lib = '-L%s' % ssp.lib
             ss_lib += (' -lumfpack -lcholmod -lcolamd -lamd -lcamd' +
-                        ' -lccolamd -lsuitesparseconfig')
+                       ' -lccolamd -lsuitesparseconfig')
 
             no_librt_archs = ['darwin-i686', 'darwin-x86_64']
-            no_rt = any(map(lambda a: spec.satisfies('='+a), no_librt_archs))
-            if not no_rt: ss_lib += ' -lrt'
+            no_rt = any(map(lambda a: spec.satisfies('=' + a),
+                            no_librt_archs))
+            if not no_rt:
+                ss_lib += ' -lrt'
             ss_lib += (' ' + metis_lib + ' ' + lapack_lib)
 
             options.extend(['MFEM_USE_SUITESPARSE=YES',
@@ -125,10 +136,11 @@ def install(self, spec, prefix):
                             'SUITESPARSE_OPT=-I%s' % ssp.include,
                             'SUITESPARSE_LIB=%s' % ss_lib])
 
-        if '+debug' in spec: options.extend(['MFEM_DEBUG=YES'])
+        if '+debug' in spec:
+            options.extend(['MFEM_DEBUG=YES'])
 
         # Dirty hack to cope with URL redirect
-        tgz_file = string.split(self.url,'/')[-1]
+        tgz_file = string.split(self.url, '/')[-1]
         tar = which('tar')
         tar('xzvf', tgz_file)
         cd(glob.glob('mfem*')[0])
@@ -138,12 +150,12 @@ def install(self, spec, prefix):
         make('all')
 
         # Run a small test before installation
-        args = ['-m', join_path('data','star.mesh'), '--no-visualization']
+        args = ['-m', join_path('data', 'star.mesh'), '--no-visualization']
         if '+mpi' in spec:
             Executable(join_path(spec['mpi'].prefix.bin,
                                  'mpirun'))('-np',
                                             '4',
-                                            join_path('examples','ex1p'),
+                                            join_path('examples', 'ex1p'),
                                             *args)
         else:
             Executable(join_path('examples', 'ex1'))(*args)
diff --git a/var/spack/repos/builtin/packages/mpc/package.py b/var/spack/repos/builtin/packages/mpc/package.py
index 92eb976f8b..71cacd5dfe 100644
--- a/var/spack/repos/builtin/packages/mpc/package.py
+++ b/var/spack/repos/builtin/packages/mpc/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Mpc(Package):
     """Gnu Mpc is a C library for the arithmetic of complex numbers
        with arbitrarily high precision and correct rounding of the
diff --git a/var/spack/repos/builtin/packages/mpe2/package.py b/var/spack/repos/builtin/packages/mpe2/package.py
index f69ea2d65b..a129d59949 100644
--- a/var/spack/repos/builtin/packages/mpe2/package.py
+++ b/var/spack/repos/builtin/packages/mpe2/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class Mpe2(Package):
-    """Message Passing Extensions (MPE) -- Parallel, shared X window graphics"""
+    """Message Passing Extensions (MPE): Parallel, shared X window graphics"""
 
     homepage = "http://www.mcs.anl.gov/research/projects/perfvis/software/MPE/"
     url      = "ftp://ftp.mcs.anl.gov/pub/mpi/mpe/mpe2-1.3.0.tar.gz"
diff --git a/var/spack/repos/builtin/packages/mpfr/package.py b/var/spack/repos/builtin/packages/mpfr/package.py
index ed3926a8ab..5777cd1926 100644
--- a/var/spack/repos/builtin/packages/mpfr/package.py
+++ b/var/spack/repos/builtin/packages/mpfr/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Mpfr(Package):
     """The MPFR library is a C library for multiple-precision
        floating-point computations with correct rounding."""
diff --git a/var/spack/repos/builtin/packages/mpibash/package.py b/var/spack/repos/builtin/packages/mpibash/package.py
index e659663d90..f3feaaaa42 100644
--- a/var/spack/repos/builtin/packages/mpibash/package.py
+++ b/var/spack/repos/builtin/packages/mpibash/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Mpibash(Package):
     """Parallel scripting right from the Bourne-Again Shell (Bash)"""
     homepage = "http://www.ccs3.lanl.gov/~pakin/software/mpibash-4.3.html"
diff --git a/var/spack/repos/builtin/packages/mpileaks/package.py b/var/spack/repos/builtin/packages/mpileaks/package.py
index 51bc66a0eb..ec4e9b30cc 100644
--- a/var/spack/repos/builtin/packages/mpileaks/package.py
+++ b/var/spack/repos/builtin/packages/mpileaks/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Mpileaks(Package):
-    """Tool to detect and report leaked MPI objects like MPI_Requests and MPI_Datatypes."""
+    """Tool to detect and report leaked MPI objects like MPI_Requests and
+       MPI_Datatypes."""
 
     homepage = "https://github.com/hpc/mpileaks"
     url      = "https://github.com/hpc/mpileaks/releases/download/v1.0/mpileaks-1.0.tar.gz"
diff --git a/var/spack/repos/builtin/packages/mrnet/package.py b/var/spack/repos/builtin/packages/mrnet/package.py
index 3380c7f823..490e99dd83 100644
--- a/var/spack/repos/builtin/packages/mrnet/package.py
+++ b/var/spack/repos/builtin/packages/mrnet/package.py
@@ -24,34 +24,40 @@
 ##############################################################################
 from spack import *
 
+
 class Mrnet(Package):
     """The MRNet Multi-Cast Reduction Network."""
     homepage = "http://paradyn.org/mrnet"
     url      = "ftp://ftp.cs.wisc.edu/paradyn/mrnet/mrnet_5.0.1.tar.gz"
     list_url = "http://ftp.cs.wisc.edu/paradyn/mrnet"
 
-    version('5.0.1-2', git='https://github.com/dyninst/mrnet.git', commit='20b1eacfc6d680d9f6472146d2dfaa0f900cc2e9')
+    version('5.0.1-2', git='https://github.com/dyninst/mrnet.git',
+            commit='20b1eacfc6d680d9f6472146d2dfaa0f900cc2e9')
     version('5.0.1', '17f65738cf1b9f9b95647ff85f69ecdd')
     version('4.1.0', '5a248298b395b329e2371bf25366115c')
     version('4.0.0', 'd00301c078cba57ef68613be32ceea2f')
 
-    # Add a patch that brings mrnet-5.0.1 up to date with the current development tree
-    # The development tree contains fixes needed for the krell based tools
-    variant('krellpatch', default=False, description="Build MRNet with krell openspeedshop based patch.")
+    # Add a patch that brings mrnet-5.0.1 up to date with the current
+    # development tree The development tree contains fixes needed for the
+    # krell based tools
+    variant('krellpatch', default=False,
+            description="Build MRNet with krell openspeedshop based patch.")
     patch('krell-5.0.1.patch', when='@5.0.1+krellpatch')
 
-    variant('lwthreads', default=False, description="Also build the MRNet LW threadsafe libraries")
+    variant('lwthreads', default=False,
+            description="Also build the MRNet LW threadsafe libraries")
     parallel = False
 
     depends_on("boost")
 
     def install(self, spec, prefix):
-        # Build the MRNet LW thread safe libraries when the krelloptions variant is present
+        # Build the MRNet LW thread safe libraries when the krelloptions
+        # variant is present
         if '+lwthreads' in spec:
-           configure("--prefix=%s" %prefix, "--enable-shared", "--enable-ltwt-threadsafe")
+            configure("--prefix=%s" % prefix, "--enable-shared",
+                      "--enable-ltwt-threadsafe")
         else:
-           configure("--prefix=%s" %prefix, "--enable-shared")
+            configure("--prefix=%s" % prefix, "--enable-shared")
 
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/msgpack-c/package.py b/var/spack/repos/builtin/packages/msgpack-c/package.py
index d42ac255d0..9a726e2356 100644
--- a/var/spack/repos/builtin/packages/msgpack-c/package.py
+++ b/var/spack/repos/builtin/packages/msgpack-c/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class MsgpackC(Package):
     """A small, fast binary interchange format convertible to/from JSON"""
     homepage = "http://www.msgpack.org"
diff --git a/var/spack/repos/builtin/packages/mumps/package.py b/var/spack/repos/builtin/packages/mumps/package.py
index b85a6d2b94..32bc42a9c3 100644
--- a/var/spack/repos/builtin/packages/mumps/package.py
+++ b/var/spack/repos/builtin/packages/mumps/package.py
@@ -36,15 +36,24 @@ class Mumps(Package):
 
     version('5.0.1', 'b477573fdcc87babe861f62316833db0')
 
-    variant('mpi', default=True, description='Activate the compilation of MUMPS with the MPI support')
-    variant('scotch', default=False, description='Activate Scotch as a possible ordering library')
-    variant('ptscotch', default=False, description='Activate PT-Scotch as a possible ordering library')
-    variant('metis', default=False, description='Activate Metis as a possible ordering library')
-    variant('parmetis', default=False, description='Activate Parmetis as a possible ordering library')
-    variant('double', default=True, description='Activate the compilation of dmumps')
-    variant('float', default=True, description='Activate the compilation of smumps')
-    variant('complex', default=True, description='Activate the compilation of cmumps and/or zmumps')
-    variant('idx64', default=False, description='Use int64_t/integer*8 as default index type')
+    variant('mpi', default=True,
+            description='Compile MUMPS with MPI support')
+    variant('scotch', default=False,
+            description='Activate Scotch as a possible ordering library')
+    variant('ptscotch', default=False,
+            description='Activate PT-Scotch as a possible ordering library')
+    variant('metis', default=False,
+            description='Activate Metis as a possible ordering library')
+    variant('parmetis', default=False,
+            description='Activate Parmetis as a possible ordering library')
+    variant('double', default=True,
+            description='Activate the compilation of dmumps')
+    variant('float', default=True,
+            description='Activate the compilation of smumps')
+    variant('complex', default=True,
+            description='Activate the compilation of cmumps and/or zmumps')
+    variant('idx64', default=False,
+            description='Use int64_t/integer*8 as default index type')
     variant('shared', default=True, description='Build shared libraries')
 
     depends_on('scotch + esmumps', when='~ptscotch+scotch')
@@ -61,8 +70,10 @@ class Mumps(Package):
     # end before install
     # def patch(self):
     def write_makefile_inc(self):
-        if ('+parmetis' in self.spec or '+ptscotch' in self.spec) and '+mpi' not in self.spec:  # NOQA: ignore=E501
-            raise RuntimeError('You cannot use the variants parmetis or ptscotch without mpi')  # NOQA: ignore=E501
+        if ('+parmetis' in self.spec or '+ptscotch' in self.spec) and (
+                '+mpi' not in self.spec):
+            raise RuntimeError(
+                'You cannot use the variants parmetis or ptscotch without mpi')
 
         makefile_conf = ["LIBBLAS = %s" % to_link_flags(
             self.spec['blas'].blas_shared_lib)
@@ -115,7 +126,7 @@ def write_makefile_inc(self):
                 # the fortran compilation flags most probably are
                 # working only for intel and gnu compilers this is
                 # perhaps something the compiler should provide
-                ['OPTF    = %s -O  -DALLOW_NON_INIT %s' % (fpic, '-fdefault-integer-8' if self.compiler.name == "gcc" else '-i8'),  # NOQA: ignore=E501
+                ['OPTF    = %s -O  -DALLOW_NON_INIT %s' % (fpic, '-fdefault-integer-8' if self.compiler.name == "gcc" else '-i8'),  # noqa
                  'OPTL    = %s -O ' % fpic,
                  'OPTC    = %s -O -DINTSIZE64' % fpic])
         else:
@@ -148,13 +159,13 @@ def write_makefile_inc(self):
                 # 10.10. Use gfortran. (Homebrew)
                 makefile_conf.extend([
                     'LIBEXT=.dylib',
-                    'AR=%s -dynamiclib -Wl,-install_name -Wl,%s/$(notdir $@) -undefined dynamic_lookup -o ' % (os.environ['FC'], prefix.lib),  # NOQA: ignore=E501
+                    'AR=%s -dynamiclib -Wl,-install_name -Wl,%s/$(notdir $@) -undefined dynamic_lookup -o ' % (os.environ['FC'], prefix.lib),  # noqa
                     'RANLIB=echo'
                 ])
             else:
                 makefile_conf.extend([
                     'LIBEXT=.so',
-                    'AR=$(FL) -shared -Wl,-soname -Wl,%s/$(notdir $@) -o' % prefix.lib,  # NOQA: ignore=E501
+                    'AR=$(FL) -shared -Wl,-soname -Wl,%s/$(notdir $@) -o' % prefix.lib,  # noqa
                     'RANLIB=echo'
                 ])
         else:
diff --git a/var/spack/repos/builtin/packages/munge/package.py b/var/spack/repos/builtin/packages/munge/package.py
index ebe3e18882..51455006e9 100644
--- a/var/spack/repos/builtin/packages/munge/package.py
+++ b/var/spack/repos/builtin/packages/munge/package.py
@@ -25,12 +25,14 @@
 from spack import *
 import os
 
+
 class Munge(Package):
     """ MUNGE Uid 'N' Gid Emporium """
     homepage = "https://code.google.com/p/munge/"
     url      = "https://github.com/dun/munge/releases/download/munge-0.5.11/munge-0.5.11.tar.bz2"
 
-    version('0.5.11', 'bd8fca8d5f4c1fcbef1816482d49ee01', url='https://github.com/dun/munge/releases/download/munge-0.5.11/munge-0.5.11.tar.bz2')
+    version('0.5.11', 'bd8fca8d5f4c1fcbef1816482d49ee01',
+            url='https://github.com/dun/munge/releases/download/munge-0.5.11/munge-0.5.11.tar.bz2')
 
     depends_on('openssl')
     depends_on('libgcrypt')
@@ -41,4 +43,3 @@ def install(self, spec, prefix):
 
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/muparser/package.py b/var/spack/repos/builtin/packages/muparser/package.py
index 47d1855329..1373c8cd7b 100644
--- a/var/spack/repos/builtin/packages/muparser/package.py
+++ b/var/spack/repos/builtin/packages/muparser/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Muparser(Package):
     """C++ math expression parser library."""
     homepage = "http://muparser.beltoforion.de/"
diff --git a/var/spack/repos/builtin/packages/muster/package.py b/var/spack/repos/builtin/packages/muster/package.py
index 64b7324415..81817e48dc 100644
--- a/var/spack/repos/builtin/packages/muster/package.py
+++ b/var/spack/repos/builtin/packages/muster/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Muster(Package):
     """The Muster library provides implementations of sequential and
        parallel K-Medoids clustering algorithms. It is intended as a
diff --git a/var/spack/repos/builtin/packages/mvapich2/package.py b/var/spack/repos/builtin/packages/mvapich2/package.py
index 0fa5821b08..17124a0572 100644
--- a/var/spack/repos/builtin/packages/mvapich2/package.py
+++ b/var/spack/repos/builtin/packages/mvapich2/package.py
@@ -40,7 +40,8 @@ class Mvapich2(Package):
     provides('mpi@:2.2', when='@1.9')  # MVAPICH2-1.9 supports MPI 2.2
     provides('mpi@:3.0', when='@2.0:')  # MVAPICH2-2.0 supports MPI 3.0
 
-    variant('debug', default=False, description='Enables debug information and error messages at run-time')
+    variant('debug', default=False,
+            description='Enable debug info and error messages at run-time')
 
     ##########
     # TODO : Process managers should be grouped into the same variant,
@@ -51,10 +52,14 @@ class Mvapich2(Package):
     GFORKER = 'gforker'
     REMSHELL = 'remshell'
     SLURM_INCOMPATIBLE_PMS = (HYDRA, GFORKER, REMSHELL)
-    variant(SLURM, default=False, description='Sets slurm as the only process manager')
-    variant(HYDRA, default=False, description='Sets hydra as one of the process managers')
-    variant(GFORKER, default=False, description='Sets gforker as one of the process managers')
-    variant(REMSHELL, default=False, description='Sets remshell as one of the process managers')
+    variant(SLURM, default=False,
+            description='Set slurm as the only process manager')
+    variant(HYDRA, default=False,
+            description='Set hydra as one of the process managers')
+    variant(GFORKER, default=False,
+            description='Set gforker as one of the process managers')
+    variant(REMSHELL, default=False,
+            description='Set remshell as one of the process managers')
     ##########
 
     ##########
@@ -67,12 +72,24 @@ class Mvapich2(Package):
     NEMESIS = 'nemesis'
     MRAIL = 'mrail'
     SUPPORTED_NETWORKS = (PSM, SOCK, NEMESIS, NEMESISIB, NEMESISIBTCP)
-    variant(PSM, default=False, description='Configures a build for QLogic PSM-CH3')
-    variant(SOCK, default=False, description='Configures a build for TCP/IP-CH3')
-    variant(NEMESISIBTCP, default=False, description='Configures a build for both OFA-IB-Nemesis and TCP/IP-Nemesis')
-    variant(NEMESISIB, default=False, description='Configures a build for OFA-IB-Nemesis')
-    variant(NEMESIS, default=False, description='Configures a build for TCP/IP-Nemesis')
-    variant(MRAIL, default=False, description='Configures a build for OFA-IB-CH3')
+    variant(
+        PSM, default=False,
+        description='Configure for QLogic PSM-CH3')
+    variant(
+        SOCK, default=False,
+        description='Configure for TCP/IP-CH3')
+    variant(
+        NEMESISIBTCP, default=False,
+        description='Configure for both OFA-IB-Nemesis and TCP/IP-Nemesis')
+    variant(
+        NEMESISIB, default=False,
+        description='Configure for OFA-IB-Nemesis')
+    variant(
+        NEMESIS, default=False,
+        description='Configure for TCP/IP-Nemesis')
+    variant(
+        MRAIL, default=False,
+        description='Configure for OFA-IB-CH3')
     ##########
 
     # FIXME : CUDA support is missing
diff --git a/var/spack/repos/builtin/packages/mxml/package.py b/var/spack/repos/builtin/packages/mxml/package.py
index 254a5f1595..113c48c18f 100644
--- a/var/spack/repos/builtin/packages/mxml/package.py
+++ b/var/spack/repos/builtin/packages/mxml/package.py
@@ -1,3 +1,27 @@
+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
 from spack import *
 
 
diff --git a/var/spack/repos/builtin/packages/nag/package.py b/var/spack/repos/builtin/packages/nag/package.py
index 63269a50b1..792e3fe3c7 100644
--- a/var/spack/repos/builtin/packages/nag/package.py
+++ b/var/spack/repos/builtin/packages/nag/package.py
@@ -43,8 +43,8 @@ class Nag(Package):
     def url_for_version(self, version):
         # TODO: url and checksum are architecture dependent
         # TODO: We currently only support x86_64
-        return 'http://www.nag.com/downloads/impl/npl6a%sna_amd64.tgz' % \
-               str(version).replace('.', '')
+        return 'http://www.nag.com/downloads/impl/npl6a%sna_amd64.tgz' % str(
+            version).replace('.', '')
 
     def install(self, spec, prefix):
         # Set installation directories
diff --git a/var/spack/repos/builtin/packages/nasm/package.py b/var/spack/repos/builtin/packages/nasm/package.py
index c955e6d13e..9faccccaae 100644
--- a/var/spack/repos/builtin/packages/nasm/package.py
+++ b/var/spack/repos/builtin/packages/nasm/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Nasm(Package):
     """NASM (Netwide Assembler) is an 80x86 assembler designed for
        portability and modularity. It includes a disassembler as well."""
diff --git a/var/spack/repos/builtin/packages/nccmp/package.py b/var/spack/repos/builtin/packages/nccmp/package.py
index 68bddd6957..d59ca09381 100644
--- a/var/spack/repos/builtin/packages/nccmp/package.py
+++ b/var/spack/repos/builtin/packages/nccmp/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Nccmp(Package):
     """Compare NetCDF Files"""
     homepage = "http://nccmp.sourceforge.net/"
diff --git a/var/spack/repos/builtin/packages/ncdu/package.py b/var/spack/repos/builtin/packages/ncdu/package.py
index 0f2f9cda45..2147319d3f 100644
--- a/var/spack/repos/builtin/packages/ncdu/package.py
+++ b/var/spack/repos/builtin/packages/ncdu/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Ncdu(Package):
     """
     Ncdu is a disk usage analyzer with an ncurses interface. It is designed
@@ -38,15 +39,15 @@ class Ncdu(Package):
 
     version('1.11', '9e44240a5356b029f05f0e70a63c4d12')
     version('1.10', '7535decc8d54eca811493e82d4bfab2d')
-    version('1.9' , '93258079db897d28bb8890e2db89b1fb')
-    version('1.8' , '94d7a821f8a0d7ba8ef3dd926226f7d5')
-    version('1.7' , '172047c29d232724cc62e773e82e592a')
+    version('1.9', '93258079db897d28bb8890e2db89b1fb')
+    version('1.8', '94d7a821f8a0d7ba8ef3dd926226f7d5')
+    version('1.7', '172047c29d232724cc62e773e82e592a')
 
     depends_on("ncurses")
 
     def install(self, spec, prefix):
         configure('--prefix=%s' % prefix,
-            '--with-ncurses=%s' % spec['ncurses'])
+                  '--with-ncurses=%s' % spec['ncurses'])
 
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/nco/package.py b/var/spack/repos/builtin/packages/nco/package.py
index 4bc4da68e3..16d72b4593 100644
--- a/var/spack/repos/builtin/packages/nco/package.py
+++ b/var/spack/repos/builtin/packages/nco/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class Nco(Package):
     """The NCO toolkit manipulates and analyzes data stored in
@@ -39,9 +39,9 @@ class Nco(Package):
 
     depends_on('netcdf')
     depends_on('antlr@2.7.7+cxx')    # (required for ncap2)
-    depends_on('gsl')            #  (desirable for ncap2)
+    depends_on('gsl')  # (desirable for ncap2)
     depends_on('udunits2')       # (allows dimensional unit transformations)
-    # depends_on('opendap')      # (enables network transparency), 
+    # depends_on('opendap')      # (enables network transparency),
 
     def install(self, spec, prefix):
         opts = [
diff --git a/var/spack/repos/builtin/packages/ncurses/package.py b/var/spack/repos/builtin/packages/ncurses/package.py
index 3ab2b0477d..aaacbac7b1 100644
--- a/var/spack/repos/builtin/packages/ncurses/package.py
+++ b/var/spack/repos/builtin/packages/ncurses/package.py
@@ -24,11 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class Ncurses(Package):
-    """The ncurses (new curses) library is a free software emulation of curses
-       in System V Release 4.0, and more. It uses terminfo format, supports pads and
-       color and multiple highlights and forms characters and function-key mapping,
-       and has all the other SYSV-curses enhancements over BSD curses.
+    """The ncurses (new curses) library is a free software emulation of
+       curses in System V Release 4.0, and more. It uses terminfo format,
+       supports pads and color and multiple highlights and forms
+       characters and function-key mapping, and has all the other
+       SYSV-curses enhancements over BSD curses.
+
     """
 
     homepage = "http://invisible-island.net/ncurses/ncurses.html"
diff --git a/var/spack/repos/builtin/packages/ncview/package.py b/var/spack/repos/builtin/packages/ncview/package.py
index b39e17ca49..f61e6984b5 100644
--- a/var/spack/repos/builtin/packages/ncview/package.py
+++ b/var/spack/repos/builtin/packages/ncview/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Ncview(Package):
     """Simple viewer for NetCDF files."""
     homepage = "http://meteora.ucsd.edu/~pierce/ncview_home_page.html"
diff --git a/var/spack/repos/builtin/packages/ndiff/package.py b/var/spack/repos/builtin/packages/ndiff/package.py
index 3c9dd4054a..dc41add03f 100644
--- a/var/spack/repos/builtin/packages/ndiff/package.py
+++ b/var/spack/repos/builtin/packages/ndiff/package.py
@@ -24,11 +24,15 @@
 ##############################################################################
 from spack import *
 
+
 class Ndiff(Package):
-    """The ndiff tool is a binary utility that compares putatively similar files
-       while ignoring small numeric differernces. This utility is most often used
-       to compare files containing a lot of floating-point numeric data that
-       may be slightly different due to numeric error."""
+    """The ndiff tool is a binary utility that compares putatively similar
+       files while ignoring small numeric differernces. This utility is
+       most often used to compare files containing a lot of
+       floating-point numeric data that may be slightly different due to
+       numeric error.
+
+    """
 
     homepage = "http://ftp.math.utah.edu/pub/ndiff/"
     url      = "http://ftp.math.utah.edu/pub/ndiff/ndiff-2.00.tar.gz"
diff --git a/var/spack/repos/builtin/packages/netcdf-cxx/package.py b/var/spack/repos/builtin/packages/netcdf-cxx/package.py
index 994c51c0da..2c3ab73309 100644
--- a/var/spack/repos/builtin/packages/netcdf-cxx/package.py
+++ b/var/spack/repos/builtin/packages/netcdf-cxx/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class NetcdfCxx(Package):
     """Deprecated C++ compatibility bindings for NetCDF.
     These do NOT read or write NetCDF-4 files, and are no longer
diff --git a/var/spack/repos/builtin/packages/netcdf/package.py b/var/spack/repos/builtin/packages/netcdf/package.py
index ad4ee59640..ab40c14340 100644
--- a/var/spack/repos/builtin/packages/netcdf/package.py
+++ b/var/spack/repos/builtin/packages/netcdf/package.py
@@ -26,9 +26,11 @@
 
 
 class Netcdf(Package):
-    """NetCDF is a set of software libraries and self-describing, machine-independent
-    data formats that support the creation, access, and sharing of array-oriented
-    scientific data."""
+    """NetCDF is a set of software libraries and self-describing,
+    machine-independent data formats that support the creation, access,
+    and sharing of array-oriented scientific data.
+
+    """
 
     homepage = "http://www.unidata.ucar.edu/software/netcdf"
     url      = "ftp://ftp.unidata.ucar.edu/pub/netcdf/netcdf-4.3.3.tar.gz"
@@ -74,18 +76,19 @@ def install(self, spec, prefix):
             "--enable-dap"
         ]
 
-        # Make sure Netcdf links against Spack's curl
-        # Otherwise it may pick up system's curl, which could lead to link errors:
-        # /usr/lib/x86_64-linux-gnu/libcurl.so: undefined reference to `SSL_CTX_use_certificate_chain_file@OPENSSL_1.0.0'
+        # Make sure Netcdf links against Spack's curl, otherwise
+        # otherwise it may pick up system's curl, which can give link
+        # errors, e.g.:
+        # undefined reference to `SSL_CTX_use_certificate_chain_file`
         LIBS.append("-lcurl")
         CPPFLAGS.append("-I%s" % spec['curl'].prefix.include)
-        LDFLAGS.append( "-L%s" % spec['curl'].prefix.lib)
+        LDFLAGS.append("-L%s" % spec['curl'].prefix.lib)
 
         if '+mpi' in spec:
             config_args.append('--enable-parallel4')
 
         CPPFLAGS.append("-I%s/include" % spec['hdf5'].prefix)
-        LDFLAGS.append( "-L%s/lib"     % spec['hdf5'].prefix)
+        LDFLAGS.append("-L%s/lib"     % spec['hdf5'].prefix)
 
         # HDF4 support
         # As of NetCDF 4.1.3, "--with-hdf4=..." is no longer a valid option
@@ -93,13 +96,13 @@ def install(self, spec, prefix):
         if '+hdf4' in spec:
             config_args.append("--enable-hdf4")
             CPPFLAGS.append("-I%s/include" % spec['hdf'].prefix)
-            LDFLAGS.append( "-L%s/lib"     % spec['hdf'].prefix)
-            LIBS.append(    "-l%s"         % "jpeg")
+            LDFLAGS.append("-L%s/lib"     % spec['hdf'].prefix)
+            LIBS.append("-l%s"         % "jpeg")
 
         if 'szip' in spec:
             CPPFLAGS.append("-I%s/include" % spec['szip'].prefix)
-            LDFLAGS.append( "-L%s/lib"     % spec['szip'].prefix)
-            LIBS.append(    "-l%s"         % "sz")
+            LDFLAGS.append("-L%s/lib"     % spec['szip'].prefix)
+            LIBS.append("-l%s"         % "sz")
 
         # Fortran support
         # In version 4.2+, NetCDF-C and NetCDF-Fortran have split.
diff --git a/var/spack/repos/builtin/packages/netgauge/package.py b/var/spack/repos/builtin/packages/netgauge/package.py
index be9292fabb..b57cdbe5f3 100644
--- a/var/spack/repos/builtin/packages/netgauge/package.py
+++ b/var/spack/repos/builtin/packages/netgauge/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Netgauge(Package):
     """Netgauge is a high-precision network parameter measurement
     tool. It supports benchmarking of many different network protocols
diff --git a/var/spack/repos/builtin/packages/netlib-lapack/package.py b/var/spack/repos/builtin/packages/netlib-lapack/package.py
index 70015baf1c..08c94a5c9b 100644
--- a/var/spack/repos/builtin/packages/netlib-lapack/package.py
+++ b/var/spack/repos/builtin/packages/netlib-lapack/package.py
@@ -26,11 +26,12 @@
 
 
 class NetlibLapack(Package):
-    """
-    LAPACK version 3.X is a comprehensive FORTRAN library that does linear algebra operations including matrix
-    inversions, least squared solutions to linear sets of equations, eigenvector analysis, singular value
-    decomposition, etc. It is a very comprehensive and reputable package that has found extensive use in the
-    scientific community.
+    """LAPACK version 3.X is a comprehensive FORTRAN library that does
+    linear algebra operations including matrix inversions, least squared
+    solutions to linear sets of equations, eigenvector analysis, singular
+    value decomposition, etc. It is a very comprehensive and reputable
+    package that has found extensive use in the scientific community.
+
     """
     homepage = "http://www.netlib.org/lapack/"
     url = "http://www.netlib.org/lapack/lapack-3.5.0.tgz"
@@ -44,9 +45,11 @@ class NetlibLapack(Package):
 
     variant('debug', default=False, description='Activates the Debug build type')
     variant('shared', default=True, description="Build shared library version")
-    variant('external-blas', default=False, description='Build lapack with an external blas')
+    variant('external-blas', default=False,
+            description='Build lapack with an external blas')
 
-    variant('lapacke', default=True, description='Activates the build of the LAPACKE C interface')
+    variant('lapacke', default=True,
+            description='Activates the build of the LAPACKE C interface')
 
     # virtual dependency
     provides('blas', when='~external-blas')
@@ -55,26 +58,30 @@ class NetlibLapack(Package):
     depends_on('cmake', type='build')
     depends_on('blas', when='+external-blas')
 
-
     def patch(self):
         # Fix cblas CMakeLists.txt -- has wrong case for subdirectory name.
         if self.spec.satisfies('@3.6.0:'):
-            filter_file('${CMAKE_CURRENT_SOURCE_DIR}/CMAKE/',
-                        '${CMAKE_CURRENT_SOURCE_DIR}/cmake/', 'CBLAS/CMakeLists.txt', string=True)
+            filter_file(
+                '${CMAKE_CURRENT_SOURCE_DIR}/CMAKE/',
+                '${CMAKE_CURRENT_SOURCE_DIR}/cmake/',
+                'CBLAS/CMakeLists.txt', string=True)
 
     def install_one(self, spec, prefix, shared):
-        cmake_args = ['-DBUILD_SHARED_LIBS:BOOL=%s' % ('ON' if shared else 'OFF'),
-                      '-DCMAKE_BUILD_TYPE:STRING=%s' % ('Debug' if '+debug' in spec else 'Release'),
-                      '-DLAPACKE:BOOL=%s' % ('ON' if '+lapacke' in spec else 'OFF')]
+        cmake_args = [
+            '-DBUILD_SHARED_LIBS:BOOL=%s' % ('ON' if shared else 'OFF'),
+            '-DCMAKE_BUILD_TYPE:STRING=%s' % (
+                'Debug' if '+debug' in spec else 'Release'),
+            '-DLAPACKE:BOOL=%s' % ('ON' if '+lapacke' in spec else 'OFF')]
         if spec.satisfies('@3.6.0:'):
-            cmake_args.extend(['-DCBLAS=ON']) # always build CBLAS
+            cmake_args.extend(['-DCBLAS=ON'])  # always build CBLAS
 
         if '+external-blas' in spec:
-            # TODO : the mechanism to specify the library should be more general,
+            # TODO : mechanism to specify the library should be more general,
             # TODO : but this allows to have an hook to an external blas
             cmake_args.extend([
                 '-DUSE_OPTIMIZED_BLAS:BOOL=ON',
-                '-DBLAS_LIBRARIES:PATH=%s' % join_path(spec['blas'].prefix.lib, 'libblas.a')
+                '-DBLAS_LIBRARIES:PATH=%s' % join_path(
+                    spec['blas'].prefix.lib, 'libblas.a')
             ])
 
         cmake_args.extend(std_cmake_args)
@@ -85,7 +92,6 @@ def install_one(self, spec, prefix, shared):
             make()
             make("install")
 
-
     def install(self, spec, prefix):
         # Always build static libraries.
         self.install_one(spec, prefix, False)
@@ -94,15 +100,17 @@ def install(self, spec, prefix):
         if '+shared' in spec:
             self.install_one(spec, prefix, True)
 
-
     def setup_dependent_package(self, module, dspec):
         # This is WIP for a prototype interface for virtual packages.
         # We can update this as more builds start depending on BLAS/LAPACK.
-        libdir = find_library_path('libblas.a', self.prefix.lib64, self.prefix.lib)
+        libdir = find_library_path(
+            'libblas.a', self.prefix.lib64, self.prefix.lib)
 
         self.spec.blas_static_lib   = join_path(libdir, 'libblas.a')
         self.spec.lapack_static_lib = join_path(libdir, 'liblapack.a')
 
         if '+shared' in self.spec:
-            self.spec.blas_shared_lib   = join_path(libdir, 'libblas.%s' % dso_suffix)
-            self.spec.lapack_shared_lib = join_path(libdir, 'liblapack.%s' % dso_suffix)
+            self.spec.blas_shared_lib   = join_path(
+                libdir, 'libblas.%s' % dso_suffix)
+            self.spec.lapack_shared_lib = join_path(
+                libdir, 'liblapack.%s' % dso_suffix)
diff --git a/var/spack/repos/builtin/packages/netlib-scalapack/package.py b/var/spack/repos/builtin/packages/netlib-scalapack/package.py
index f7733249cf..49b8633209 100644
--- a/var/spack/repos/builtin/packages/netlib-scalapack/package.py
+++ b/var/spack/repos/builtin/packages/netlib-scalapack/package.py
@@ -39,7 +39,8 @@ class NetlibScalapack(Package):
     # versions before 2.0.0 are not using cmake and requires blacs as
     # a separated package
 
-    variant('shared', default=True, description='Build the shared library version')
+    variant('shared', default=True,
+            description='Build the shared library version')
     variant('fpic', default=False, description="Build with -fpic compiler option")
 
     provides('scalapack')
diff --git a/var/spack/repos/builtin/packages/nettle/package.py b/var/spack/repos/builtin/packages/nettle/package.py
index 56e4836611..02e9ef5f1e 100644
--- a/var/spack/repos/builtin/packages/nettle/package.py
+++ b/var/spack/repos/builtin/packages/nettle/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Nettle(Package):
     """The Nettle package contains the low-level cryptographic library
     that is designed to fit easily in many contexts."""
diff --git a/var/spack/repos/builtin/packages/ninja/package.py b/var/spack/repos/builtin/packages/ninja/package.py
index e3f3819289..dcd00576dd 100644
--- a/var/spack/repos/builtin/packages/ninja/package.py
+++ b/var/spack/repos/builtin/packages/ninja/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class Ninja(Package):
     """ A small, fast Make alternative """
     homepage = "https://martine.github.io/ninja/"
@@ -35,7 +36,6 @@ class Ninja(Package):
     extends('python')
 
     def install(self, spec, prefix):
-        sh = which('sh')
         python('configure.py', '--bootstrap')
 
         cp = which('cp')
diff --git a/var/spack/repos/builtin/packages/numdiff/package.py b/var/spack/repos/builtin/packages/numdiff/package.py
index 97164165e0..fb897f560b 100644
--- a/var/spack/repos/builtin/packages/numdiff/package.py
+++ b/var/spack/repos/builtin/packages/numdiff/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import sys
 
+
 class Numdiff(Package):
     """Numdiff is a little program that can be used to compare putatively
     similar files line by line and field by field, ignoring small numeric
@@ -35,7 +36,7 @@ class Numdiff(Package):
 
     version('5.8.1',    'a295eb391f6cb1578209fc6b4f9d994e')
 
-    depends_on('gettext', when=sys.platform=='darwin', type='build')
+    depends_on('gettext', when=sys.platform == 'darwin', type='build')
 
     def install(self, spec, prefix):
         options = ['--prefix=%s' % prefix]
diff --git a/var/spack/repos/builtin/packages/oce/package.py b/var/spack/repos/builtin/packages/oce/package.py
index 108c8f8a41..4f9f7b2e12 100644
--- a/var/spack/repos/builtin/packages/oce/package.py
+++ b/var/spack/repos/builtin/packages/oce/package.py
@@ -40,7 +40,8 @@ class Oce(Package):
     version('0.16.1', '4d591b240c9293e879f50d86a0cb2bb3')
     version('0.16',   '7a4b4df5a104d75a537e25e7dd387eca')
 
-    variant('tbb', default=True, description='Build with Intel Threading Building Blocks')
+    variant('tbb', default=True,
+            description='Build with Intel Threading Building Blocks')
 
     depends_on('cmake@2.8:', type='build')
     depends_on('tbb', when='+tbb')
diff --git a/var/spack/repos/builtin/packages/ompss/package.py b/var/spack/repos/builtin/packages/ompss/package.py
index c0848ffd70..02925974ea 100644
--- a/var/spack/repos/builtin/packages/ompss/package.py
+++ b/var/spack/repos/builtin/packages/ompss/package.py
@@ -26,19 +26,18 @@
 import os
 import glob
 
-# working config lines for ompss 14.06 :
-#./nanox-0.7/config.log:    $ ./configure --prefix=/usr/gapps/exmatex/ompss --with-mcc=/usr/gapps/exmatex/ompss/ --with-hwloc=/usr
-#./mcxx-1.99.2/config.log:    $ ./configure --prefix=/usr/gapps/exmatex/ompss --with-nanox=/usr/gapps/exmatex/ompss --enable-ompss --with-mpi=/opt/mvapich2-intel-shmem-1.7 --enable-tl-openmp-profile --enable-tl-openmp-intel
 
 class Ompss(Package):
-    """OmpSs is an effort to integrate features from the StarSs
-       programming model developed by BSC into a single programming
-       model. In particular, our objective is to extend OpenMP with
-       new directives to support asynchronous parallelism and
-       heterogeneity (devices like GPUs). However, it can also be
-       understood as new directives extending other accelerator based
-       APIs like CUDA or OpenCL. Our OmpSs environment is built on top
-       of our Mercurium compiler and Nanos++ runtime system."""
+    """OmpSs is an effort to integrate features from the StarSs programming
+       model developed by BSC into a single programming model. In
+       particular, our objective is to extend OpenMP with new directives
+       to support asynchronous parallelism and heterogeneity (devices
+       like GPUs). However, it can also be understood as new directives
+       extending other accelerator based APIs like CUDA or OpenCL. Our
+       OmpSs environment is built on top of our Mercurium compiler and
+       Nanos++ runtime system.
+
+    """
     homepage = "http://pm.bsc.es/"
     url      = "http://pm.bsc.es/sites/default/files/ftp/ompss/releases/ompss-14.10.tar.gz"
     list_url = 'http://pm.bsc.es/ompss-downloads'
@@ -47,7 +46,7 @@ class Ompss(Package):
 
     # all dependencies are optional, really
     depends_on("mpi")
-    #depends_on("openmp")
+    # depends_on("openmp")
     depends_on("hwloc")
     depends_on("extrae")
 
@@ -61,14 +60,22 @@ def install(self, spec, prefix):
 
         openmp_options = ["--enable-tl-openmp-profile"]
         if spec.satisfies('%intel'):
-            openmp_options.append( "--enable-tl-openmp-intel" )
+            openmp_options.append("--enable-tl-openmp-intel")
 
         os.chdir(glob.glob('./nanox-*').pop())
-        configure("--prefix=%s" % prefix, "--with-mcc=%s" % prefix, "--with-extrae=%s" % spec['extrae'].prefix, "--with-hwloc=%s" % spec['hwloc'].prefix)
+        configure("--prefix=%s" % prefix,
+                  "--with-mcc=%s" % prefix,
+                  "--with-extrae=%s" %
+                  spec['extrae'].prefix,
+                  "--with-hwloc=%s" % spec['hwloc'].prefix)
         make()
         make("install")
 
         os.chdir(glob.glob('../mcxx-*').pop())
-        configure("--prefix=%s" % prefix, "--with-nanox=%s" % prefix, "--enable-ompss", "--with-mpi=%s" % mpi.prefix, *openmp_options)
+        configure("--prefix=%s" % prefix,
+                  "--with-nanox=%s" % prefix,
+                  "--enable-ompss",
+                  "--with-mpi=%s" % mpi.prefix,
+                  *openmp_options)
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/ompt-openmp/package.py b/var/spack/repos/builtin/packages/ompt-openmp/package.py
index 800c04ae0e..40159e4c6c 100644
--- a/var/spack/repos/builtin/packages/ompt-openmp/package.py
+++ b/var/spack/repos/builtin/packages/ompt-openmp/package.py
@@ -24,8 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class OmptOpenmp(Package):
-    """LLVM/Clang OpenMP runtime with OMPT support. This is a fork of the OpenMPToolsInterface/LLVM-openmp fork of the official LLVM OpenMP mirror.  This library provides a drop-in replacement of the OpenMP runtimes for GCC, Intel and LLVM/Clang."""
+    """LLVM/Clang OpenMP runtime with OMPT support. This is a fork of the
+       OpenMPToolsInterface/LLVM-openmp fork of the official LLVM OpenMP
+       mirror.  This library provides a drop-in replacement of the OpenMP
+       runtimes for GCC, Intel and LLVM/Clang.
+
+    """
     homepage = "https://github.com/OpenMPToolsInterface/LLVM-openmp"
     url      = "http://github.com/khuck/LLVM-openmp/archive/v0.1.tar.gz"
 
@@ -35,13 +41,9 @@ class OmptOpenmp(Package):
 
     def install(self, spec, prefix):
         with working_dir("runtime/build", create=True):
-
-            # FIXME: Modify the configure line to suit your build system here.
-            cmake('-DCMAKE_C_COMPILER=%s' % self.compiler.cc, 
+            cmake('-DCMAKE_C_COMPILER=%s' % self.compiler.cc,
                   '-DCMAKE_CXX_COMPILER=%s' % self.compiler.cxx,
                   '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
                   '..', *std_cmake_args)
-
-            # FIXME: Add logic to build and install here
             make()
             make("install")
diff --git a/var/spack/repos/builtin/packages/openspeedshop/package.py b/var/spack/repos/builtin/packages/openspeedshop/package.py
index 4e2694a53c..5e141060b2 100644
--- a/var/spack/repos/builtin/packages/openspeedshop/package.py
+++ b/var/spack/repos/builtin/packages/openspeedshop/package.py
@@ -22,7 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-################################################################################
+##########################################################################
 # Copyright (c) 2015-2016 Krell Institute. All Rights Reserved.
 #
 # This program is free software; you can redistribute it and/or modify it under
@@ -38,50 +38,72 @@
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 # Place, Suite 330, Boston, MA  02111-1307  USA
-################################################################################
+##########################################################################
 
 from spack import *
 
+
 class Openspeedshop(Package):
-    """OpenSpeedShop is a community effort by The Krell Institute with current direct funding from DOEs NNSA.
-    It builds on top of a broad list of community infrastructures, most notably Dyninst and MRNet from UW,
-    libmonitor from Rice, and PAPI from UTK. OpenSpeedShop is an open source multi platform Linux performance
-    tool which is targeted to support performance analysis of applications running on both single node and
-    large scale IA64, IA32, EM64T, AMD64, PPC, ARM, Blue Gene and Cray platforms.  OpenSpeedShop development
-    is hosted by the Krell Institute. The infrastructure and base components of OpenSpeedShop are released
-    as open source code primarily under LGPL.
+    """OpenSpeedShop is a community effort by The Krell Institute with
+    current direct funding from DOEs NNSA.  It builds on top of a broad
+    list of community infrastructures, most notably Dyninst and MRNet
+    from UW, libmonitor from Rice, and PAPI from UTK. OpenSpeedShop is an
+    open source multi platform Linux performance tool which is targeted
+    to support performance analysis of applications running on both
+    single node and large scale IA64, IA32, EM64T, AMD64, PPC, ARM, Blue
+    Gene and Cray platforms.  OpenSpeedShop development is hosted by the
+    Krell Institute. The infrastructure and base components of
+    OpenSpeedShop are released as open source code primarily under LGPL.
+
     """
 
     homepage = "http://www.openspeedshop.org"
-    url		= "https://github.com/OpenSpeedShop"
+    url = "https://github.com/OpenSpeedShop"
     version('2.2', '16cb051179c2038de4e8a845edf1d573')
     # Use when the git repository is available
-    version('2.2', branch='master', git='https://github.com/OpenSpeedShop/openspeedshop.git')
+    version('2.2', branch='master',
+            git='https://github.com/OpenSpeedShop/openspeedshop.git')
 
     # Optional mirror template
-    #url = "file:/home/jeg/OpenSpeedShop_ROOT/SOURCES/openspeedshop-2.2.tar.gz"
-    #version('2.2', '643337740dc6c2faca60f42d3620b0e1')
+    # url="file:/home/jeg/OpenSpeedShop_ROOT/SOURCES/openspeedshop-2.2.tar.gz"
+    # version('2.2', '643337740dc6c2faca60f42d3620b0e1')
 
     parallel = False
 
-    variant('offline', default=True, description="build with offline instrumentor enabled.")
-    variant('cbtf', default=False, description="build with cbtf instrumentor enabled.")
-    variant('runtime', default=False, description="build only the runtime libraries and collectors.")
-    variant('frontend', default=False, description="build only the front-end tool using the runtime_dir to point to the target build.")
-    variant('cuda', default=False, description="build with cuda packages included.")
-    variant('ptgf', default=False, description="build with the PTGF based gui package enabled.")
-    variant('rtfe', default=False, description="build for generic cluster platforms that have different processors on the fe and be nodes.")
+    variant('offline', default=True,
+            description="build with offline instrumentor enabled.")
+    variant('cbtf', default=False,
+            description="build with cbtf instrumentor enabled.")
+    variant('runtime', default=False,
+            description="build only the runtime libraries and collectors.")
+    variant('frontend', default=False,
+            description="build only the front-end tool using the runtime_dir "
+                        "to point to the target build.")
+    variant('cuda', default=False,
+            description="build with cuda packages included.")
+    variant('ptgf', default=False,
+            description="build with the PTGF based gui package enabled.")
+    variant('rtfe', default=False,
+            description="build for generic cluster platforms that have "
+                        "different processors on the fe and be nodes.")
 
     # MPI variants
-    variant('openmpi', default=False, description="Build mpi experiment collector for openmpi MPI when this variant is enabled.")
-    variant('mpt', default=False, description="Build mpi experiment collector for SGI MPT MPI when this variant is enabled.")
-    variant('mvapich2', default=False, description="Build mpi experiment collector for mvapich2 MPI when this variant is enabled.")
-    variant('mvapich', default=False, description="Build mpi experiment collector for mvapich MPI when this variant is enabled.")
-    variant('mpich2', default=False, description="Build mpi experiment collector for mpich2 MPI when this variant is enabled.")
-    variant('mpich', default=False, description="Build mpi experiment collector for mpich MPI when this variant is enabled.")
+    variant('openmpi', default=False,
+            description="Build mpi experiment collector for openmpi MPI.")
+    variant('mpt', default=False,
+            description="Build mpi experiment collector for SGI MPT MPI.")
+    variant('mvapich2', default=False,
+            description="Build mpi experiment collector for mvapich2 MPI.")
+    variant('mvapich', default=False,
+            description="Build mpi experiment collector for mvapich MPI.")
+    variant('mpich2', default=False,
+            description="Build mpi experiment collector for mpich2 MPI.")
+    variant('mpich', default=False,
+            description="Build mpi experiment collector for mpich MPI.")
 
     depends_on("cmake@3.0.2", type='build')
-    # Dependencies for openspeedshop that are common to all the variants of the OpenSpeedShop build
+    # Dependencies for openspeedshop that are common to all the variants of
+    # the OpenSpeedShop build
     depends_on("bison")
     depends_on("flex")
     depends_on("binutils@2.24+krellpatch")
@@ -111,11 +133,13 @@ class Openspeedshop(Package):
     depends_on("mrnet@5.0.1:+lwthreads+krellpatch", when='+cbtf')
 
     def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
-        # Sets build type parameters into cmakeOptions the options that will enable the cbtf-krell built type settings
+        # Sets build type parameters into cmakeOptions the options that will
+        # enable the cbtf-krell built type settings
 
-        compile_flags="-O2 -g"
+        compile_flags = "-O2 -g"
         BuildTypeOptions = []
-        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the stdcmakeargs
+        # Set CMAKE_BUILD_TYPE to what cbtf-krell wants it to be, not the
+        # stdcmakeargs
         for word in cmakeOptions[:]:
             if word.startswith('-DCMAKE_BUILD_TYPE'):
                 cmakeOptions.remove(word)
@@ -124,63 +148,64 @@ def adjustBuildTypeParams_cmakeOptions(self, spec, cmakeOptions):
             if word.startswith('-DCMAKE_C_FLAGS'):
                 cmakeOptions.remove(word)
         BuildTypeOptions.extend([
-                 '-DCMAKE_BUILD_TYPE=None',
-                 '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
-                 '-DCMAKE_C_FLAGS=%s'           % compile_flags
+            '-DCMAKE_BUILD_TYPE=None',
+            '-DCMAKE_CXX_FLAGS=%s'         % compile_flags,
+            '-DCMAKE_C_FLAGS=%s'           % compile_flags
         ])
 
         cmakeOptions.extend(BuildTypeOptions)
 
     def set_mpi_cmakeOptions(self, spec, cmakeOptions):
-        # Appends to cmakeOptions the options that will enable the appropriate MPI implementations
- 
+        # Appends to cmakeOptions the options that will enable the appropriate
+        # MPI implementations
+
         MPIOptions = []
 
         # openmpi
         if '+openmpi' in spec:
             MPIOptions.extend([
-                 '-DOPENMPI_DIR=%s' % spec['openmpi'].prefix
+                '-DOPENMPI_DIR=%s' % spec['openmpi'].prefix
             ])
         # mpich
         if '+mpich' in spec:
             MPIOptions.extend([
-                 '-DMPICH_DIR=%s' % spec['mpich'].prefix
+                '-DMPICH_DIR=%s' % spec['mpich'].prefix
             ])
         # mpich2
         if '+mpich2' in spec:
             MPIOptions.extend([
-                 '-DMPICH2_DIR=%s' % spec['mpich2'].prefix
+                '-DMPICH2_DIR=%s' % spec['mpich2'].prefix
             ])
         # mvapich
         if '+mvapich' in spec:
             MPIOptions.extend([
-                 '-DMVAPICH_DIR=%s' % spec['mvapich'].prefix
+                '-DMVAPICH_DIR=%s' % spec['mvapich'].prefix
             ])
         # mvapich2
         if '+mvapich2' in spec:
             MPIOptions.extend([
-                 '-DMVAPICH2_DIR=%s' % spec['mvapich2'].prefix
+                '-DMVAPICH2_DIR=%s' % spec['mvapich2'].prefix
             ])
         # mpt
         if '+mpt' in spec:
             MPIOptions.extend([
-                 '-DMPT_DIR=%s' % spec['mpt'].prefix
+                '-DMPT_DIR=%s' % spec['mpt'].prefix
             ])
 
         cmakeOptions.extend(MPIOptions)
 
-
     def install(self, spec, prefix):
 
-        #openmpi_prefix_path = "/opt/openmpi-1.8.2"
-        #mvapich_prefix_path = "/usr/local/tools/mvapich-gnu"
-                          #'-DOPENMPI_DIR=%s'            % spec['openmpi'].prefix,
-                          #'-DOPENMPI_DIR=%s'            % openmpi_prefix_path,
-                          #'-DMVAPICH_DIR=%s'            % mvapich_prefix_path,
+        # openmpi_prefix_path = "/opt/openmpi-1.8.2"
+        # mvapich_prefix_path = "/usr/local/tools/mvapich-gnu"
+        #    '-DOPENMPI_DIR=%s'            % spec['openmpi'].prefix,
+        #    '-DOPENMPI_DIR=%s'            % openmpi_prefix_path,
+        #    '-DMVAPICH_DIR=%s'            % mvapich_prefix_path,
 
-        # FIXME: How do we make this dynamic in spack?   That is, can we specify the paths to cuda dynamically?
-        # WAITING for external package support. 
-        #if '+cuda' in spec:
+        # FIXME: How do we make this dynamic in spack?
+        # FIXME: That is, can we specify the paths to cuda dynamically?
+        # WAITING for external package support.
+        # if '+cuda' in spec:
         #    cuda_prefix_path = "/usr/local/cuda-6.0"
         #    cupti_prefix_path = "/usr/local/cuda-6.0/extras/CUPTI"
 
@@ -190,19 +215,20 @@ def install(self, spec, prefix):
                 with working_dir('build_runtime', create=True):
 
                     cmakeOptions = []
-                    cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                                         '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
-                                         '-DINSTRUMENTOR=%s'           % instrumentor_setting,
-                                         '-DLIBMONITOR_DIR=%s'         % spec['libmonitor'].prefix,
-                                         '-DLIBUNWIND_DIR=%s'          % spec['libunwind'].prefix,
-                                         '-DPAPI_DIR=%s'               % spec['papi'].prefix 
-                                        ])
- 
+                    cmakeOptions.extend([
+                        '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                        '-DCMAKE_LIBRARY_PATH=%s' % prefix.lib64,
+                        '-DINSTRUMENTOR=%s' % instrumentor_setting,
+                        '-DLIBMONITOR_DIR=%s' % spec['libmonitor'].prefix,
+                        '-DLIBUNWIND_DIR=%s' % spec['libunwind'].prefix,
+                        '-DPAPI_DIR=%s' % spec['papi'].prefix])
+
                     # Add any MPI implementations coming from variant settings
                     self.set_mpi_cmakeOptions(spec, cmakeOptions)
                     cmakeOptions.extend(std_cmake_args)
 
-                    # Adjust the build options to the favored ones for this build
+                    # Adjust the build options to the favored ones for this
+                    # build
                     self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
 
                     cmake('..', *cmakeOptions)
@@ -214,43 +240,49 @@ def install(self, spec, prefix):
                 cmake_prefix_path = join_path(spec['dyninst'].prefix)
                 with working_dir('build', create=True):
 
-                    #python_vers=join_path(spec['python'].version[:2])
-                    #'-DOPENMPI_DIR=%s'            % openmpi_prefix_path,
-                    #'-DMVAPICH_DIR=%s'            % mvapich_prefix_path,
-                    #'-DMPICH_DIR=%s'              % spec['mpich'].prefix,
-                    #'-DMPICH2_DIR=%s'             % spec['mpich2'].prefix,
-                    #'-DBoost_NO_SYSTEM_PATHS=TRUE',
-                    #'-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-                    #'-DOPENMPI_DIR=%s'            % spec['openmpi'].prefix,
+                    # python_vers=join_path(spec['python'].version[:2])
+                    # '-DOPENMPI_DIR=%s'            % openmpi_prefix_path,
+                    # '-DMVAPICH_DIR=%s'            % mvapich_prefix_path,
+                    # '-DMPICH_DIR=%s'              % spec['mpich'].prefix,
+                    # '-DMPICH2_DIR=%s'             % spec['mpich2'].prefix,
+                    # '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                    # '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
+                    # '-DOPENMPI_DIR=%s'            % spec['openmpi'].prefix,
 
-                    python_vers='%d.%d' % spec['python'].version[:2]
+                    python_vers = '%d.%d' % spec['python'].version[:2]
 
                     cmakeOptions = []
-                    cmakeOptions.extend(['-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                                         '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
-                                         '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
-                                         '-DINSTRUMENTOR=%s'           % instrumentor_setting,
-                                         '-DBINUTILS_DIR=%s'           % spec['binutils'].prefix,
-                                         '-DLIBELF_DIR=%s'             % spec['libelf'].prefix,
-                                         '-DLIBDWARF_DIR=%s'           % spec['libdwarf'].prefix,
-                                         '-DLIBMONITOR_DIR=%s'         % spec['libmonitor'].prefix,
-                                         '-DLIBUNWIND_DIR=%s'          % spec['libunwind'].prefix,
-                                         '-DPAPI_DIR=%s'               % spec['papi'].prefix,
-                                         '-DSQLITE3_DIR=%s'            % spec['sqlite'].prefix,
-                                         '-DQTLIB_DIR=%s'              % spec['qt'].prefix,
-                                         '-DPYTHON_EXECUTABLE=%s'      % join_path(spec['python'].prefix + '/bin/python'),
-                                         '-DPYTHON_INCLUDE_DIR=%s'     % join_path(spec['python'].prefix.include) + '/python' + python_vers,
-                                         '-DPYTHON_LIBRARY=%s'         % join_path(spec['python'].prefix.lib) + '/libpython' + python_vers + '.so',
-                                         '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                                         '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-                                         '-DDYNINST_DIR=%s'            % spec['dyninst'].prefix
-                                        ])
+                    cmakeOptions.extend([
+                        '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                        '-DCMAKE_LIBRARY_PATH=%s' % prefix.lib64,
+                        '-DCMAKE_PREFIX_PATH=%s' % cmake_prefix_path,
+                        '-DINSTRUMENTOR=%s'   % instrumentor_setting,
+                        '-DBINUTILS_DIR=%s'   % spec['binutils'].prefix,
+                        '-DLIBELF_DIR=%s'     % spec['libelf'].prefix,
+                        '-DLIBDWARF_DIR=%s'   % spec['libdwarf'].prefix,
+                        '-DLIBMONITOR_DIR=%s' % spec['libmonitor'].prefix,
+                        '-DLIBUNWIND_DIR=%s'  % spec['libunwind'].prefix,
+                        '-DPAPI_DIR=%s'       % spec['papi'].prefix,
+                        '-DSQLITE3_DIR=%s'    % spec['sqlite'].prefix,
+                        '-DQTLIB_DIR=%s'      % spec['qt'].prefix,
+                        '-DPYTHON_EXECUTABLE=%s' % join_path(
+                            spec['python'].prefix, '/bin/python'),
+                        '-DPYTHON_INCLUDE_DIR=%s' % join_path(
+                            spec['python'].prefix.include,
+                            'python' + python_vers),
+                        '-DPYTHON_LIBRARY=%s' % join_path(
+                            spec['python'].prefix.lib,
+                            'libpython' + python_vers + '.so'),
+                        '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                        '-DBOOST_ROOT=%s'          % spec['boost'].prefix,
+                        '-DDYNINST_DIR=%s'         % spec['dyninst'].prefix])
 
                     # Add any MPI implementations coming from variant settings
                     self.set_mpi_cmakeOptions(spec, cmakeOptions)
                     cmakeOptions.extend(std_cmake_args)
 
-                    # Adjust the build options to the favored ones for this build
+                    # Adjust the build options to the favored ones for this
+                    # build
                     self.adjustBuildTypeParams_cmakeOptions(spec, cmakeOptions)
 
                     cmake('..', *cmakeOptions)
@@ -261,160 +293,171 @@ def install(self, spec, prefix):
 
         elif '+cbtf' in spec:
             instrumentor_setting = "cbtf"
-            resolve_symbols = "symtabapi"
-            cmake_prefix_path = join_path(spec['cbtf'].prefix) + ':' + join_path(spec['cbtf-krell'].prefix) + ':' + join_path(spec['dyninst'].prefix)
-            #runtime_platform_cray = "cray"
-            #if '+cray' in spec:
+            cmake_prefix_path = ':'.join(spec['cbtf'].prefix,
+                                         spec['cbtf-krell'].prefix,
+                                         spec['dyninst'].prefix)
+
+            # resolve_symbols = "symtabapi"
+            # runtime_platform_cray = "cray"
+            # if '+cray' in spec:
             #    if '+runtime' in spec:
-            #                   #-DCBTF_KRELL_CN_RUNTIME_DIR=${CBTF_KRELL_CN_INSTALL_DIR} \
-            #        with working_dir('build_cbtf_cray_runtime', create=True):
-            #            python_vers='%d.%d' % spec['python'].version[:2]
-            #            cmake('..',
-            #                  '-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-            #                  '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
-            #                  '-DRUNTIME_PLATFORM=%s'		% runtime_platform_cray,
-            #                  '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
-            #                  '-DRESOLVE_SYMBOLS=%s'		% resolve_symbols,
-            #                  '-DINSTRUMENTOR=%s'           % instrumentor_setting,
-            #                  '-DCBTF_DIR=%s'			% spec['cbtf'].prefix,
-            #                  '-DCBTF_KRELL_DIR=%s'		% spec['cbtf-krell'].prefix,
-            #                  '-DCBTF_KRELL_CN_RUNTIME_DIR=%s'	% spec['cbtf-krell'].prefix,
-            #                  '-DBINUTILS_DIR=%s'           % spec['binutils'].prefix,
-            #                  '-DLIBELF_DIR=%s'             % spec['libelf'].prefix,
-            #                  '-DLIBDWARF_DIR=%s'           % spec['libdwarf'].prefix,
-            #                  '-DLIBUNWIND_DIR=%s'          % spec['libunwind'].prefix,
-            #                  '-DPAPI_DIR=%s'               % spec['papi'].prefix,
-            #                  '-DDYNINST_DIR=%s'            % spec['dyninst'].prefix,
-            #                  '-DXERCESC_DIR=%s'            % spec['xerces-c'].prefix,
-            #                  '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
-            #                  '-DBoost_NO_SYSTEM_PATHS=TRUE',
-            #                  '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-            #                  *std_cmake_args)
+            #      #-DCBTF_KRELL_CN_RUNTIME_DIR=${CBTF_KRELL_CN_INSTALL_DIR} \
+            #      with working_dir('build_cbtf_cray_runtime', create=True):
+            #        python_vers='%d.%d' % spec['python'].version[:2]
+            #        cmake('..',
+            #   '-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
+            #   '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
+            #   '-DRUNTIME_PLATFORM=%s' % runtime_platform_cray,
+            #   '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
+            #   '-DRESOLVE_SYMBOLS=%s' % resolve_symbols,
+            #   '-DINSTRUMENTOR=%s'           % instrumentor_setting,
+            #   '-DCBTF_DIR=%s' % spec['cbtf'].prefix,
+            #   '-DCBTF_KRELL_DIR=%s' % spec['cbtf-krell'].prefix,
+            #   '-DCBTF_KRELL_CN_RUNTIME_DIR=%s' % spec['cbtf-krell'].prefix,
+            #   '-DBINUTILS_DIR=%s'           % spec['binutils'].prefix,
+            #   '-DLIBELF_DIR=%s'             % spec['libelf'].prefix,
+            #   '-DLIBDWARF_DIR=%s'           % spec['libdwarf'].prefix,
+            #   '-DLIBUNWIND_DIR=%s'          % spec['libunwind'].prefix,
+            #   '-DPAPI_DIR=%s'               % spec['papi'].prefix,
+            #   '-DDYNINST_DIR=%s'            % spec['dyninst'].prefix,
+            #   '-DXERCESC_DIR=%s'            % spec['xerces-c'].prefix,
+            #   '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
+            #   '-DBoost_NO_SYSTEM_PATHS=TRUE',
+            #   '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
+            #   *std_cmake_args)
 
             #           make("clean")
             #           make()
             #           make("install")
 
-
-            #elif '+mic' in spec:
-            # comment out else and shift over the default case below until arch detection is in
-            #else:
+            # elif '+mic' in spec:
+            # comment out else and shift over the default case below
+            # until arch detection is in else:
 
             if '+runtime' in spec:
                 with working_dir('build_cbtf_runtime', create=True):
-                    python_vers='%d.%d' % spec['python'].version[:2]
-                    cmake('..',
-                          '-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                          '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
-                          '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
-                          '-DINSTRUMENTOR=%s'           % instrumentor_setting,
-                          '-DBINUTILS_DIR=%s'           % spec['binutils'].prefix,
-                          '-DLIBELF_DIR=%s'             % spec['libelf'].prefix,
-                          '-DLIBDWARF_DIR=%s'           % spec['libdwarf'].prefix,
-                          '-DCBTF_DIR=%s'               % spec['cbtf'].prefix,
-                          '-DCBTF_KRELL_DIR=%s'         % spec['cbtf-krell'].prefix,
-                          '-DPYTHON_EXECUTABLE=%s'      % join_path(spec['python'].prefix + '/bin/python'),
-                          '-DPYTHON_INCLUDE_DIR=%s'     % join_path(spec['python'].prefix.include) + '/python' + python_vers,
-                          '-DPYTHON_LIBRARY=%s'         % join_path(spec['python'].prefix.lib) + '/libpython' + python_vers + '.so',
-                          '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                          '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-                          '-DDYNINST_DIR=%s'            % spec['dyninst'].prefix,
-                          '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
-                          *std_cmake_args)
+                    python_vers = '%d.%d' % spec['python'].version[:2]
+                    cmake(
+                        '..',
+                        '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                        '-DCMAKE_LIBRARY_PATH=%s' % prefix.lib64,
+                        '-DCMAKE_PREFIX_PATH=%s' % cmake_prefix_path,
+                        '-DINSTRUMENTOR=%s' % instrumentor_setting,
+                        '-DBINUTILS_DIR=%s' % spec['binutils'].prefix,
+                        '-DLIBELF_DIR=%s' % spec['libelf'].prefix,
+                        '-DLIBDWARF_DIR=%s' % spec['libdwarf'].prefix,
+                        '-DCBTF_DIR=%s' % spec['cbtf'].prefix,
+                        '-DCBTF_KRELL_DIR=%s' % spec['cbtf-krell'].prefix,
+                        '-DPYTHON_EXECUTABLE=%s' % join_path(
+                            spec['python'].prefix, 'bin', 'python'),
+                        '-DPYTHON_INCLUDE_DIR=%s' % join_path(
+                            spec['python'].prefix.include,
+                            'python' + python_vers),
+                        '-DPYTHON_LIBRARY=%s' % join_path(
+                            spec['python'].prefix.lib,
+                            'libpython' + python_vers + '.so'),
+                        '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                        '-DBOOST_ROOT=%s' % spec['boost'].prefix,
+                        '-DDYNINST_DIR=%s' % spec['dyninst'].prefix,
+                        '-DMRNET_DIR=%s' % spec['mrnet'].prefix,
+                        *std_cmake_args)
+
                     make("clean")
                     make()
                     make("install")
 
             else:
                 with working_dir('build_cbtf', create=True):
-                    python_vers='%d.%d' % spec['python'].version[:2]
-                    #python_vers=join_path(spec['python'].version[:2])
-                    cmake('..',
-                          '-DCMAKE_INSTALL_PREFIX=%s'   % prefix,
-                          '-DCMAKE_LIBRARY_PATH=%s'     % prefix.lib64,
-                          '-DCMAKE_PREFIX_PATH=%s'      % cmake_prefix_path,
-                          '-DINSTRUMENTOR=%s'           % instrumentor_setting,
-                          '-DBINUTILS_DIR=%s'           % spec['binutils'].prefix,
-                          '-DLIBELF_DIR=%s'             % spec['libelf'].prefix,
-                          '-DLIBDWARF_DIR=%s'           % spec['libdwarf'].prefix,
-                          '-DSQLITE3_DIR=%s'            % spec['sqlite'].prefix,
-                          '-DCBTF_DIR=%s'               % spec['cbtf'].prefix,
-                          '-DCBTF_KRELL_DIR=%s'         % spec['cbtf-krell'].prefix,
-                          '-DQTLIB_DIR=%s'              % spec['qt'].prefix,
-                          '-DPYTHON_EXECUTABLE=%s'      % join_path(spec['python'].prefix + '/bin/python'),
-                          '-DPYTHON_INCLUDE_DIR=%s'     % join_path(spec['python'].prefix.include) + '/python' + python_vers,
-                          '-DPYTHON_LIBRARY=%s'         % join_path(spec['python'].prefix.lib) + '/libpython' + python_vers + '.so',
-                          '-DBoost_NO_SYSTEM_PATHS=TRUE',
-                          '-DBOOST_ROOT=%s'             % spec['boost'].prefix,
-                          '-DDYNINST_DIR=%s'            % spec['dyninst'].prefix,
-                          '-DMRNET_DIR=%s'              % spec['mrnet'].prefix,
-                          *std_cmake_args)
+                    python_vers = '%d.%d' % spec['python'].version[:2]
+                    # python_vers=join_path(spec['python'].version[:2])
+                    cmake(
+                        '..',
+                        '-DCMAKE_INSTALL_PREFIX=%s' % prefix,
+                        '-DCMAKE_LIBRARY_PATH=%s'   % prefix.lib64,
+                        '-DCMAKE_PREFIX_PATH=%s'    % cmake_prefix_path,
+                        '-DINSTRUMENTOR=%s'         % instrumentor_setting,
+                        '-DBINUTILS_DIR=%s'         % spec['binutils'].prefix,
+                        '-DLIBELF_DIR=%s'         % spec['libelf'].prefix,
+                        '-DLIBDWARF_DIR=%s'       % spec['libdwarf'].prefix,
+                        '-DSQLITE3_DIR=%s'        % spec['sqlite'].prefix,
+                        '-DCBTF_DIR=%s'           % spec['cbtf'].prefix,
+                        '-DCBTF_KRELL_DIR=%s'     % spec['cbtf-krell'].prefix,
+                        '-DQTLIB_DIR=%s'          % spec['qt'].prefix,
+                        '-DPYTHON_EXECUTABLE=%s' % join_path(
+                            spec['python'].prefix, 'bin', 'python'),
+                        '-DPYTHON_INCLUDE_DIR=%s' % join_path(
+                            spec['python'].prefix.include,
+                            'python' + python_vers),
+                        '-DPYTHON_LIBRARY=%s' % join_path(
+                            spec['python'].prefix.lib,
+                            'libpython' + python_vers + '.so'),
+                        '-DBoost_NO_SYSTEM_PATHS=TRUE',
+                        '-DBOOST_ROOT=%s' % spec['boost'].prefix,
+                        '-DDYNINST_DIR=%s' % spec['dyninst'].prefix,
+                        '-DMRNET_DIR=%s' % spec['mrnet'].prefix,
+                        *std_cmake_args)
+
                     make("clean")
                     make()
                     make("install")
 
-        #if '+frontend' in spec:
-        #    with working_dir('build_frontend', create=True):
-        #         tbd
-
-
-
-        #if '+cbtf' in spec:
-        #   if cray build type detected:
-        #        if '+runtime' in spec:
-        #            with working_dir('build_cray_cbtf_compute', create=True):
-        #                tbd
-        #        else:
-        #            with working_dir('build_cray_cbtf_frontend', create=True):
-        #                tbd
-        #            with working_dir('build_cray_osscbtf_frontend', create=True):
-        #                tbd
-        #        fi
-        #    elif '+intelmic' in spec:
-        #        if '+runtime' in spec:
-        #            with working_dir('build_intelmic_cbtf_compute', create=True):
-        #                tbd
-        #        else:
-        #            with working_dir('build_intelmic_cbtf_frontend', create=True):
-        #                tbd
-        #            with working_dir('build_intelmic_osscbtf_frontend', create=True):
-        #        fi
-        #    else
-        #        with working_dir('build_cluster_cbtf', create=True):
-        #             tbd
-        #        with working_dir('build_cluster osscbtf', create=True):
-        #             tbd
-        #    fi
-        #elif '+offline' in spec:
-        #   if cray build type detected:
-        #        if '+runtime' in spec:
-        #            with working_dir('build_cray_ossoff_compute', create=True):
-        #                tbd
-        #        else:
-        #            with working_dir('build_cray_ossoff_frontend', create=True):
-        #                tbd
-        #        fi
-        #    elif '+intelmic' in spec:
-        #        if '+runtime' in spec:
-        #            with working_dir('build_intelmic_ossoff_compute', create=True):
-        #                tbd
-        #        else:
-        #            with working_dir('build_intelmic_ossoff_frontend', create=True):
-        #                tbd
-        #        fi
-        #    elif bgq build type detected:
-        #        if '+runtime' in spec:
-        #            with working_dir('build_bgq_ossoff_compute', create=True):
-        #                tbd
-        #        else:
-        #            with working_dir('build_bgq_ossoff_frontend', create=True):
-        #                tbd
-        #        fi
-        #    else
-        #        with working_dir('build_cluster ossoff', create=True):
-        #             tbd
-        #    fi
-        #fi
-
-
+# if '+frontend' in spec:
+#    with working_dir('build_frontend', create=True):
+#         tbd
 
+# if '+cbtf' in spec:
+#   if cray build type detected:
+#        if '+runtime' in spec:
+#            with working_dir('build_cray_cbtf_compute', create=True):
+#                tbd
+#        else:
+#            with working_dir('build_cray_cbtf_frontend', create=True):
+#                tbd
+#            with working_dir('build_cray_osscbtf_frontend', create=True):
+#                tbd
+#        fi
+#    elif '+intelmic' in spec:
+#        if '+runtime' in spec:
+#            with working_dir('build_intelmic_cbtf_compute', create=True):
+#                tbd
+#        else:
+#            with working_dir('build_intelmic_cbtf_frontend', create=True):
+#                tbd
+#            with working_dir('build_intelmic_osscbtf_frontend', create=True):
+#        fi
+#    else
+#        with working_dir('build_cluster_cbtf', create=True):
+#             tbd
+#        with working_dir('build_cluster osscbtf', create=True):
+#             tbd
+#    fi
+# elif '+offline' in spec:
+#   if cray build type detected:
+#        if '+runtime' in spec:
+#            with working_dir('build_cray_ossoff_compute', create=True):
+#                tbd
+#        else:
+#            with working_dir('build_cray_ossoff_frontend', create=True):
+#                tbd
+#        fi
+#    elif '+intelmic' in spec:
+#        if '+runtime' in spec:
+#            with working_dir('build_intelmic_ossoff_compute', create=True):
+#                tbd
+#        else:
+#            with working_dir('build_intelmic_ossoff_frontend', create=True):
+#                tbd
+#        fi
+#    elif bgq build type detected:
+#        if '+runtime' in spec:
+#            with working_dir('build_bgq_ossoff_compute', create=True):
+#                tbd
+#        else:
+#            with working_dir('build_bgq_ossoff_frontend', create=True):
+#                tbd
+#        fi
+#    else
+#        with working_dir('build_cluster ossoff', create=True):
+#             tbd
+#    fi
+# fi
diff --git a/var/spack/repos/builtin/packages/osu-micro-benchmarks/package.py b/var/spack/repos/builtin/packages/osu-micro-benchmarks/package.py
index 2104bf842b..161ba6254a 100644
--- a/var/spack/repos/builtin/packages/osu-micro-benchmarks/package.py
+++ b/var/spack/repos/builtin/packages/osu-micro-benchmarks/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class OsuMicroBenchmarks(Package):
     """The Ohio MicroBenchmark suite is a collection of independent MPI
     message passing performance microbenchmarks developed and written at
@@ -41,7 +42,6 @@ class OsuMicroBenchmarks(Package):
     depends_on('mpi')
     depends_on('cuda', when='+cuda')
 
-
     def install(self, spec, prefix):
         config_args = [
             'CC=%s'  % spec['mpi'].prefix.bin + '/mpicc',
diff --git a/var/spack/repos/builtin/packages/otf/package.py b/var/spack/repos/builtin/packages/otf/package.py
index 4a7a00b212..39eb5a85aa 100644
--- a/var/spack/repos/builtin/packages/otf/package.py
+++ b/var/spack/repos/builtin/packages/otf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Otf(Package):
     """To improve scalability for very large and massively parallel
        traces the Open Trace Format (OTF) is developed at ZIH as a
diff --git a/var/spack/repos/builtin/packages/otf2/package.py b/var/spack/repos/builtin/packages/otf2/package.py
index 131836f8ac..ee39f448eb 100644
--- a/var/spack/repos/builtin/packages/otf2/package.py
+++ b/var/spack/repos/builtin/packages/otf2/package.py
@@ -27,8 +27,8 @@
 
 
 class Otf2(Package):
-    """
-    The Open Trace Format 2 is a highly scalable, memory efficient event trace data format plus support library.
+    """The Open Trace Format 2 is a highly scalable, memory efficient event
+       trace data format plus support library.
     """
 
     homepage = "http://www.vi-hps.org/score-p"
@@ -46,10 +46,10 @@ class Otf2(Package):
             url="http://www.vi-hps.org/upload/packages/otf2/otf2-1.2.1.tar.gz")
 
     def install(self, spec, prefix):
-        configure_args=["--prefix=%s" % prefix,
-                        "--enable-shared",
-                        "CFLAGS=-fPIC",
-                        "CXXFLAGS=-fPIC"]
+        configure_args = ["--prefix=%s" % prefix,
+                          "--enable-shared",
+                          "CFLAGS=-fPIC",
+                          "CXXFLAGS=-fPIC"]
         configure(*configure_args)
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/papi/package.py b/var/spack/repos/builtin/packages/papi/package.py
index ecd958407f..5c4abe1730 100644
--- a/var/spack/repos/builtin/packages/papi/package.py
+++ b/var/spack/repos/builtin/packages/papi/package.py
@@ -28,6 +28,7 @@
 import sys
 from llnl.util.filesystem import fix_darwin_install_name
 
+
 class Papi(Package):
     """PAPI provides the tool designer and application engineer with a
        consistent interface and methodology for use of the performance
@@ -47,7 +48,7 @@ class Papi(Package):
     def install(self, spec, prefix):
         with working_dir("src"):
 
-            configure_args=["--prefix=%s" % prefix]
+            configure_args = ["--prefix=%s" % prefix]
 
             # PAPI uses MPI if MPI is present; since we don't require
             # an MPI package, we ensure that all attempts to use MPI
diff --git a/var/spack/repos/builtin/packages/paradiseo/package.py b/var/spack/repos/builtin/packages/paradiseo/package.py
index 97d36d94a4..c91b01c964 100644
--- a/var/spack/repos/builtin/packages/paradiseo/package.py
+++ b/var/spack/repos/builtin/packages/paradiseo/package.py
@@ -23,40 +23,50 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import sys
+
 
 class Paradiseo(Package):
-    """A C++ white-box object-oriented framework dedicated to the reusable design of metaheuristics."""
+    """A C++ white-box object-oriented framework dedicated to the reusable
+       design of metaheuristics."""
     homepage = "http://paradiseo.gforge.inria.fr/"
 
-    # Installing from the development version is a better option at this 
+    # Installing from the development version is a better option at this
     # point than using the very old supplied packages
     version('head', git='https://gforge.inria.fr/git/paradiseo/paradiseo.git')
-    # This is a version that the package formula author has tested successfully.
-    # However, the clone is very large (~1Gb git history). The history in the 
-    # head version has been trimmed significantly.
-    version('dev-safe', git='https://gforge.inria.fr/git/paradiseo/paradiseo.git',
-             commit='dbb8fbe9a786efd4d1c26408ac1883442e7643a6')
 
-    variant('mpi',      default=True,  description='Compile with parallel and distributed metaheuristics module')
-    variant('smp',      default=True,  description='Compile with symmetric multi-processing module ')
-    variant('edo',      default=True,  description='Compile with (Experimental) EDO module')
-    #variant('tests',    default=False, description='Compile with build tests')
-    #variant('doc',      default=False, description='Compile with documentation')
-    variant('debug',    default=False, description='Builds a debug version of the libraries')
+    # This is a version that the package formula author has tested
+    # successfully.  However, the clone is very large (~1Gb git
+    # history). The history in the head version has been trimmed
+    # significantly.
+    version(
+        'dev-safe', git='https://gforge.inria.fr/git/paradiseo/paradiseo.git',
+        commit='dbb8fbe9a786efd4d1c26408ac1883442e7643a6')
+
+    variant('mpi',      default=True,
+            description='Compile with parallel and distributed '
+                        'metaheuristics module')
+    variant('smp',      default=True,
+            description='Compile with symmetric multi-processing module ')
+    variant('edo',      default=True,
+            description='Compile with (Experimental) EDO module')
+
+    # variant('tests', default=False, description='Compile with build tests')
+    # variant('doc', default=False, description='Compile with documentation')
+    variant('debug',    default=False,
+            description='Builds a debug version of the libraries')
     variant('openmp',   default=False, description='Enable OpenMP support')
     variant('gnuplot',  default=False, description='Enable GnuPlot support')
-    
+
     # Required dependencies
-    depends_on ("cmake", type='build')
+    depends_on("cmake", type='build')
 
     # Optional dependencies
-    depends_on ("mpi", when="+mpi")
-    depends_on ("doxygen", when='+doc', type='build')
-    depends_on ("gnuplot", when='+gnuplot')
-    depends_on ("eigen", when='+edo', type='build')
-    depends_on ("boost~mpi", when='+edo~mpi')
-    depends_on ("boost+mpi", when='+edo+mpi')
+    depends_on("mpi", when="+mpi")
+    depends_on("doxygen", when='+doc', type='build')
+    depends_on("gnuplot", when='+gnuplot')
+    depends_on("eigen", when='+edo', type='build')
+    depends_on("boost~mpi", when='+edo~mpi')
+    depends_on("boost+mpi", when='+edo+mpi')
 
     # Patches
     patch('enable_eoserial.patch')
@@ -69,16 +79,21 @@ def install(self, spec, prefix):
         options.extend(std_cmake_args)
 
         options.extend([
-            '-DCMAKE_BUILD_TYPE:STRING=%s' % ('Debug' if '+debug' in spec else 'Release'),
+            '-DCMAKE_BUILD_TYPE:STRING=%s' % (
+                'Debug' if '+debug' in spec else 'Release'),
             '-DINSTALL_TYPE:STRING=MIN',
             '-DMPI:BOOL=%s' % ('TRUE' if '+mpi' in spec else 'FALSE'),
-            '-DSMP:BOOL=%s' % ('TRUE' if '+smp' in spec else 'FALSE'), # Note: This requires a C++11 compatible compiler
+            # Note: This requires a C++11 compatible compiler
+            '-DSMP:BOOL=%s' % ('TRUE' if '+smp' in spec else 'FALSE'),
             '-DEDO:BOOL=%s' % ('TRUE' if '+edo' in spec else 'FALSE'),
-            '-DENABLE_CMAKE_TESTING:BOOL=%s' % ('TRUE' if '+tests' in spec else 'FALSE'),
-            '-DENABLE_OPENMP:BOOL=%s' % ('TRUE' if '+openmp' in spec else 'FALSE'),
-            '-DENABLE_GNUPLOT:BOOL=%s' % ('TRUE' if '+gnuplot' in spec else 'FALSE')
+            '-DENABLE_CMAKE_TESTING:BOOL=%s' % (
+                'TRUE' if '+tests' in spec else 'FALSE'),
+            '-DENABLE_OPENMP:BOOL=%s' % (
+                'TRUE' if '+openmp' in spec else 'FALSE'),
+            '-DENABLE_GNUPLOT:BOOL=%s' % (
+                'TRUE' if '+gnuplot' in spec else 'FALSE')
         ])
- 
+
         with working_dir('spack-build', create=True):
             # Configure
             cmake('..', *options)
diff --git a/var/spack/repos/builtin/packages/parallel-netcdf/package.py b/var/spack/repos/builtin/packages/parallel-netcdf/package.py
index deee46df8f..be4a8bc38b 100644
--- a/var/spack/repos/builtin/packages/parallel-netcdf/package.py
+++ b/var/spack/repos/builtin/packages/parallel-netcdf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class ParallelNetcdf(Package):
     """Parallel netCDF (PnetCDF) is a library providing high-performance
     parallel I/O while still maintaining file-format compatibility with
@@ -37,12 +38,14 @@ class ParallelNetcdf(Package):
 
     variant('cxx', default=True, description='Build the C++ Interface')
     variant('fortran', default=True, description='Build the Fortran Interface')
-    variant('fpic', default=True, description='Produce position-independent code (for use with shared libraries)')
+    variant('fpic', default=True,
+            description='Produce position-independent code (for shared libs)')
 
     depends_on("m4", type='build')
     depends_on("mpi")
 
-    # See: https://trac.mcs.anl.gov/projects/parallel-netcdf/browser/trunk/INSTALL
+    # See:
+    # https://trac.mcs.anl.gov/projects/parallel-netcdf/browser/trunk/INSTALL
     def install(self, spec, prefix):
         args = list()
         if '+fpic' in spec:
@@ -53,7 +56,7 @@ def install(self, spec, prefix):
             args.append('--disable-fortran')
 
         args.extend(["--prefix=%s" % prefix,
-                  "--with-mpi=%s" % spec['mpi'].prefix])
+                     "--with-mpi=%s" % spec['mpi'].prefix])
         configure(*args)
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/paraver/package.py b/var/spack/repos/builtin/packages/paraver/package.py
index 50ce6b79fb..1b6e3ce8e6 100644
--- a/var/spack/repos/builtin/packages/paraver/package.py
+++ b/var/spack/repos/builtin/packages/paraver/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class Paraver(Package):
     """"A very powerful performance visualization and analysis tool
         based on traces that can be used to analyse any information that
@@ -36,7 +37,7 @@ class Paraver(Package):
     version('4.5.3', '625de9ec0d639acd18d1aaa644b38f72')
 
     depends_on("boost")
-    #depends_on("extrae")
+    # depends_on("extrae")
     depends_on("wx")
     depends_on("wxpropgrid")
 
@@ -47,8 +48,11 @@ def install(self, spec, prefix):
         make("install")
 
         os.chdir("../paraver-kernel")
-		#"--with-extrae=%s" % spec['extrae'].prefix,
-        configure("--prefix=%s" % prefix, "--with-ptools-common-files=%s" % prefix, "--with-boost=%s" % spec['boost'].prefix, "--with-boost-serialization=boost_serialization")
+        # "--with-extrae=%s" % spec['extrae'].prefix,
+        configure("--prefix=%s" % prefix,
+                  "--with-ptools-common-files=%s" % prefix,
+                  "--with-boost=%s" % spec['boost'].prefix,
+                  "--with-boost-serialization=boost_serialization")
         make()
         make("install")
 
@@ -58,8 +62,11 @@ def install(self, spec, prefix):
         make("install")
 
         os.chdir("../wxparaver")
-		#"--with-extrae=%s" % spec['extrae'].prefix,
-        configure("--prefix=%s" % prefix, "--with-paraver=%s" % prefix, "--with-boost=%s" % spec['boost'].prefix, "--with-boost-serialization=boost_serialization", "--with-wxdir=%s" % spec['wx'].prefix.bin)
+        # "--with-extrae=%s" % spec['extrae'].prefix,
+        configure("--prefix=%s" % prefix,
+                  "--with-paraver=%s" % prefix,
+                  "--with-boost=%s" % spec['boost'].prefix,
+                  "--with-boost-serialization=boost_serialization",
+                  "--with-wxdir=%s" % spec['wx'].prefix.bin)
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/paraview/package.py b/var/spack/repos/builtin/packages/paraview/package.py
index 75f5272006..68c781734e 100644
--- a/var/spack/repos/builtin/packages/paraview/package.py
+++ b/var/spack/repos/builtin/packages/paraview/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Paraview(Package):
     homepage = 'http://www.paraview.org'
     url      = 'http://www.paraview.org/files/v5.0/ParaView-v'
@@ -52,23 +53,22 @@ class Paraview(Package):
     depends_on('cmake', type='build')
     depends_on('bzip2')
     depends_on('freetype')
-    #depends_on('hdf5+mpi', when='+mpi')
-    #depends_on('hdf5~mpi', when='~mpi')
+    # depends_on('hdf5+mpi', when='+mpi')
+    # depends_on('hdf5~mpi', when='~mpi')
     depends_on('jpeg')
     depends_on('libpng')
     depends_on('libtiff')
     depends_on('libxml2')
-    #depends_on('netcdf')
-    #depends_on('netcdf-cxx')
-    #depends_on('protobuf') # version mismatches?
-    #depends_on('sqlite') # external version not supported
+    # depends_on('netcdf')
+    # depends_on('netcdf-cxx')
+    # depends_on('protobuf') # version mismatches?
+    # depends_on('sqlite') # external version not supported
     depends_on('zlib')
 
     def url_for_version(self, version):
         """Handle ParaView version-based custom URLs."""
         return self._url_str % (version.up_to(2), version)
 
-
     def install(self, spec, prefix):
         with working_dir('spack-build', create=True):
             def feature_to_bool(feature, on='ON', off='OFF'):
@@ -80,34 +80,46 @@ def nfeature_to_bool(feature):
                 return feature_to_bool(feature, on='OFF', off='ON')
 
             feature_args = std_cmake_args[:]
-            feature_args.append('-DPARAVIEW_BUILD_QT_GUI:BOOL=%s' % feature_to_bool('+qt'))
-            feature_args.append('-DPARAVIEW_ENABLE_PYTHON:BOOL=%s' % feature_to_bool('+python'))
+            feature_args.append(
+                '-DPARAVIEW_BUILD_QT_GUI:BOOL=%s' % feature_to_bool('+qt'))
+            feature_args.append('-DPARAVIEW_ENABLE_PYTHON:BOOL=%s' %
+                                feature_to_bool('+python'))
             if '+python' in spec:
-                feature_args.append('-DPYTHON_EXECUTABLE:FILEPATH=%s/bin/python' % spec['python'].prefix)
-            feature_args.append('-DPARAVIEW_USE_MPI:BOOL=%s' % feature_to_bool('+mpi'))
+                feature_args.append(
+                    '-DPYTHON_EXECUTABLE:FILEPATH=%s/bin/python'
+                    % spec['python'].prefix)
+            feature_args.append('-DPARAVIEW_USE_MPI:BOOL=%s' %
+                                feature_to_bool('+mpi'))
             if '+mpi' in spec:
-                feature_args.append('-DMPIEXEC:FILEPATH=%s/bin/mpiexec' % spec['mpi'].prefix)
-            feature_args.append('-DVTK_ENABLE_TCL_WRAPPING:BOOL=%s' % feature_to_bool('+tcl'))
-            feature_args.append('-DVTK_OPENGL_HAS_OSMESA:BOOL=%s' % feature_to_bool('+osmesa'))
-            feature_args.append('-DVTK_USE_X:BOOL=%s' % nfeature_to_bool('+osmesa'))
-            feature_args.append('-DVTK_RENDERING_BACKEND:STRING=%s' % feature_to_bool('+opengl2', 'OpenGL2', 'OpenGL'))
+                feature_args.append(
+                    '-DMPIEXEC:FILEPATH=%s/bin/mpiexec' % spec['mpi'].prefix)
+            feature_args.append(
+                '-DVTK_ENABLE_TCL_WRAPPING:BOOL=%s' % feature_to_bool('+tcl'))
+            feature_args.append('-DVTK_OPENGL_HAS_OSMESA:BOOL=%s' %
+                                feature_to_bool('+osmesa'))
+            feature_args.append('-DVTK_USE_X:BOOL=%s' %
+                                nfeature_to_bool('+osmesa'))
+            feature_args.append(
+                '-DVTK_RENDERING_BACKEND:STRING=%s' %
+                feature_to_bool('+opengl2', 'OpenGL2', 'OpenGL'))
 
             feature_args.extend(std_cmake_args)
 
             if 'darwin' in self.spec.architecture:
                 feature_args.append('-DVTK_USE_X:BOOL=OFF')
-                feature_args.append('-DPARAVIEW_DO_UNIX_STYLE_INSTALLS:BOOL=ON')
+                feature_args.append(
+                    '-DPARAVIEW_DO_UNIX_STYLE_INSTALLS:BOOL=ON')
 
             cmake('..',
-                '-DCMAKE_INSTALL_PREFIX:PATH=%s' % prefix,
-                '-DBUILD_TESTING:BOOL=OFF',
-                '-DVTK_USE_SYSTEM_FREETYPE:BOOL=ON',
-                '-DVTK_USE_SYSTEM_HDF5:BOOL=OFF',
-                '-DVTK_USE_SYSTEM_JPEG:BOOL=ON',
-                '-DVTK_USE_SYSTEM_LIBXML2:BOOL=ON',
-                '-DVTK_USE_SYSTEM_NETCDF:BOOL=OFF',
-                '-DVTK_USE_SYSTEM_TIFF:BOOL=ON',
-                '-DVTK_USE_SYSTEM_ZLIB:BOOL=ON',
-                *feature_args)
+                  '-DCMAKE_INSTALL_PREFIX:PATH=%s' % prefix,
+                  '-DBUILD_TESTING:BOOL=OFF',
+                  '-DVTK_USE_SYSTEM_FREETYPE:BOOL=ON',
+                  '-DVTK_USE_SYSTEM_HDF5:BOOL=OFF',
+                  '-DVTK_USE_SYSTEM_JPEG:BOOL=ON',
+                  '-DVTK_USE_SYSTEM_LIBXML2:BOOL=ON',
+                  '-DVTK_USE_SYSTEM_NETCDF:BOOL=OFF',
+                  '-DVTK_USE_SYSTEM_TIFF:BOOL=ON',
+                  '-DVTK_USE_SYSTEM_ZLIB:BOOL=ON',
+                  *feature_args)
             make()
             make('install')
diff --git a/var/spack/repos/builtin/packages/parmetis/package.py b/var/spack/repos/builtin/packages/parmetis/package.py
index b2ceadc128..d1cfa27f3a 100644
--- a/var/spack/repos/builtin/packages/parmetis/package.py
+++ b/var/spack/repos/builtin/packages/parmetis/package.py
@@ -38,8 +38,10 @@ class Parmetis(Package):
     version('4.0.3', 'f69c479586bf6bb7aff6a9bc0c739628')
     version('4.0.2', '0912a953da5bb9b5e5e10542298ffdce')
 
-    variant('shared', default=True, description='Enables the build of shared libraries')
-    variant('debug', default=False, description='Builds the library in debug mode')
+    variant('shared', default=True,
+            description='Enables the build of shared libraries')
+    variant('debug', default=False,
+            description='Builds the library in debug mode')
     variant('gdb', default=False, description='Enables gdb support')
 
     depends_on('cmake@2.8:', type='build')  # build dependency
diff --git a/var/spack/repos/builtin/packages/parpack/package.py b/var/spack/repos/builtin/packages/parpack/package.py
index 5930dada85..84bc88b3b0 100644
--- a/var/spack/repos/builtin/packages/parpack/package.py
+++ b/var/spack/repos/builtin/packages/parpack/package.py
@@ -26,6 +26,7 @@
 import os
 import shutil
 
+
 class Parpack(Package):
     """ARPACK is a collection of Fortran77 subroutines designed to solve large
        scale eigenvalue problems."""
@@ -52,13 +53,13 @@ def patch(self):
         mf.filter('^PLAT.*',      'PLAT = ')
         mf.filter('^home.*',      'home = %s' % os.getcwd())
         mf.filter('^BLASdir.*',   'BLASdir = %s' % self.spec['blas'].prefix)
-        mf.filter('^LAPACKdir.*', 'LAPACKdir = %s' % self.spec['lapack'].prefix)
+        mf.filter('^LAPACKdir.*', 'LAPACKdir = %s' %
+                  self.spec['lapack'].prefix)
         mf.filter('^MAKE.*',      'MAKE = make')
 
         # build the library in our own prefix.
         mf.filter('^ARPACKLIB.*', 'PARPACKLIB = %s/libparpack.a' % os.getcwd())
 
-
     def install(self, spec, prefix):
         with working_dir('PARPACK/SRC/MPI'):
             make('all')
diff --git a/var/spack/repos/builtin/packages/patchelf/package.py b/var/spack/repos/builtin/packages/patchelf/package.py
index 3860875bcc..cd1f679062 100644
--- a/var/spack/repos/builtin/packages/patchelf/package.py
+++ b/var/spack/repos/builtin/packages/patchelf/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Patchelf(Package):
-    """PatchELF is a small utility to modify the dynamic linker and RPATH of ELF executables."""
+    """PatchELF is a small utility to modify the dynamic linker and RPATH of
+       ELF executables."""
 
     homepage = "https://nixos.org/patchelf.html"
     url      = "http://nixos.org/releases/patchelf/patchelf-0.8/patchelf-0.8.tar.gz"
diff --git a/var/spack/repos/builtin/packages/pcre2/package.py b/var/spack/repos/builtin/packages/pcre2/package.py
index b013685f05..a2739e0584 100644
--- a/var/spack/repos/builtin/packages/pcre2/package.py
+++ b/var/spack/repos/builtin/packages/pcre2/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Pcre2(Package):
     """The PCRE2 package contains Perl Compatible Regular Expression
        libraries. These are useful for implementing regular expression
diff --git a/var/spack/repos/builtin/packages/pdt/package.py b/var/spack/repos/builtin/packages/pdt/package.py
index 32611a7b14..074d28540b 100644
--- a/var/spack/repos/builtin/packages/pdt/package.py
+++ b/var/spack/repos/builtin/packages/pdt/package.py
@@ -27,11 +27,13 @@
 
 
 class Pdt(Package):
-    """
-    Program Database Toolkit (PDT) is a framework for analyzing source code written in several programming languages
-    and for making rich program knowledge accessible to developers of static and dynamic analysis tools. PDT implements
-    a standard program representation, the program database (PDB), that can be accessed in a uniform way through a
-    class library supporting common PDB operations.
+    """Program Database Toolkit (PDT) is a framework for analyzing source
+       code written in several programming languages and for making rich
+       program knowledge accessible to developers of static and dynamic
+       analysis tools. PDT implements a standard program representation,
+       the program database (PDB), that can be accessed in a uniform way
+       through a class library supporting common PDB operations.
+
     """
     homepage = "https://www.cs.uoregon.edu/research/pdt/home.php"
 
diff --git a/var/spack/repos/builtin/packages/petsc/package.py b/var/spack/repos/builtin/packages/petsc/package.py
index 11f5c36c22..079e0b7af4 100644
--- a/var/spack/repos/builtin/packages/petsc/package.py
+++ b/var/spack/repos/builtin/packages/petsc/package.py
@@ -44,18 +44,25 @@ class Petsc(Package):
     version('3.5.1', 'a557e029711ebf425544e117ffa44d8f')
     version('3.4.4', '7edbc68aa6d8d6a3295dd5f6c2f6979d')
 
-    variant('shared',  default=True,  description='Enables the build of shared libraries')
+    variant('shared',  default=True,
+            description='Enables the build of shared libraries')
     variant('mpi',     default=True,  description='Activates MPI support')
-    variant('double',  default=True,  description='Switches between single and double precision')
+    variant('double',  default=True,
+            description='Switches between single and double precision')
     variant('complex', default=False, description='Build with complex numbers')
     variant('debug',   default=False, description='Compile in debug mode')
 
-    variant('metis',   default=True,  description='Activates support for metis and parmetis')
-    variant('hdf5',    default=True,  description='Activates support for HDF5 (only parallel)')
+    variant('metis',   default=True,
+            description='Activates support for metis and parmetis')
+    variant('hdf5',    default=True,
+            description='Activates support for HDF5 (only parallel)')
     variant('boost',   default=True,  description='Activates support for Boost')
-    variant('hypre',   default=True,  description='Activates support for Hypre (only parallel)')
-    variant('mumps',   default=True,  description='Activates support for MUMPS (only parallel)')
-    variant('superlu-dist', default=True, description='Activates support for SuperluDist (only parallel)')
+    variant('hypre',   default=True,
+            description='Activates support for Hypre (only parallel)')
+    variant('mumps',   default=True,
+            description='Activates support for MUMPS (only parallel)')
+    variant('superlu-dist', default=True,
+            description='Activates support for SuperluDist (only parallel)')
 
     # Virtual dependencies
     depends_on('blas')
diff --git a/var/spack/repos/builtin/packages/pidx/package.py b/var/spack/repos/builtin/packages/pidx/package.py
index e7b18ce7a8..e19bb9e470 100644
--- a/var/spack/repos/builtin/packages/pidx/package.py
+++ b/var/spack/repos/builtin/packages/pidx/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Pidx(Package):
     """PIDX Parallel I/O Library.
 
diff --git a/var/spack/repos/builtin/packages/pixman/package.py b/var/spack/repos/builtin/packages/pixman/package.py
index 34d8dfea0d..3d7e332a3f 100644
--- a/var/spack/repos/builtin/packages/pixman/package.py
+++ b/var/spack/repos/builtin/packages/pixman/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Pixman(Package):
     """The Pixman package contains a library that provides low-level
        pixel manipulation features such as image compositing and
diff --git a/var/spack/repos/builtin/packages/pmgr_collective/package.py b/var/spack/repos/builtin/packages/pmgr_collective/package.py
index a6e3b8e2a2..f6466a7954 100644
--- a/var/spack/repos/builtin/packages/pmgr_collective/package.py
+++ b/var/spack/repos/builtin/packages/pmgr_collective/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PmgrCollective(Package):
     """PMGR_COLLECTIVE provides a scalable network for bootstrapping
        MPI jobs."""
diff --git a/var/spack/repos/builtin/packages/ppl/package.py b/var/spack/repos/builtin/packages/ppl/package.py
index a54c6ce221..73404103f0 100644
--- a/var/spack/repos/builtin/packages/ppl/package.py
+++ b/var/spack/repos/builtin/packages/ppl/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Ppl(Package):
     """The Parma Polyhedra Library (PPL) provides numerical
     abstractions especially targeted at applications in the field of
diff --git a/var/spack/repos/builtin/packages/proj/package.py b/var/spack/repos/builtin/packages/proj/package.py
index 20dd4f5f69..06ab6108b6 100644
--- a/var/spack/repos/builtin/packages/proj/package.py
+++ b/var/spack/repos/builtin/packages/proj/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Proj(Package):
     """Cartographic Projections"""
     homepage = "https://github.com/OSGeo/proj.4/wiki"
diff --git a/var/spack/repos/builtin/packages/protobuf/package.py b/var/spack/repos/builtin/packages/protobuf/package.py
index d4befc34ab..bf0073b16a 100644
--- a/var/spack/repos/builtin/packages/protobuf/package.py
+++ b/var/spack/repos/builtin/packages/protobuf/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Protobuf(Package):
     """Google's data interchange format."""
 
diff --git a/var/spack/repos/builtin/packages/psi4/package.py b/var/spack/repos/builtin/packages/psi4/package.py
index 192dd86e0e..6296d0cee6 100644
--- a/var/spack/repos/builtin/packages/psi4/package.py
+++ b/var/spack/repos/builtin/packages/psi4/package.py
@@ -39,7 +39,15 @@ class Psi4(Package):
     # Required dependencies
     depends_on('blas')
     depends_on('lapack')
-    depends_on('boost+chrono+filesystem+python+regex+serialization+system+timer+thread')
+    depends_on('boost'
+               '+chrono'
+               '+filesystem'
+               '+python'
+               '+regex'
+               '+serialization'
+               '+system'
+               '+timer'
+               '+thread')
     depends_on('python')
     depends_on('cmake', type='build')
     depends_on('py-numpy', type=nolink)
diff --git a/var/spack/repos/builtin/packages/py-SQLAlchemy/package.py b/var/spack/repos/builtin/packages/py-SQLAlchemy/package.py
index 05f4616ff5..ca59105b4c 100644
--- a/var/spack/repos/builtin/packages/py-SQLAlchemy/package.py
+++ b/var/spack/repos/builtin/packages/py-SQLAlchemy/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PySqlalchemy(Package):
     """The Python SQL Toolkit and Object Relational Mapper"""
 
diff --git a/var/spack/repos/builtin/packages/py-argcomplete/package.py b/var/spack/repos/builtin/packages/py-argcomplete/package.py
index ace9320424..2549972a6d 100644
--- a/var/spack/repos/builtin/packages/py-argcomplete/package.py
+++ b/var/spack/repos/builtin/packages/py-argcomplete/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyArgcomplete(Package):
     """Bash tab completion for argparse."""
 
diff --git a/var/spack/repos/builtin/packages/py-astroid/package.py b/var/spack/repos/builtin/packages/py-astroid/package.py
index e1ea71fb67..a47b7ffa33 100644
--- a/var/spack/repos/builtin/packages/py-astroid/package.py
+++ b/var/spack/repos/builtin/packages/py-astroid/package.py
@@ -43,4 +43,3 @@ class PyAstroid(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-autopep8/package.py b/var/spack/repos/builtin/packages/py-autopep8/package.py
index 507664949b..f6c08e2728 100644
--- a/var/spack/repos/builtin/packages/py-autopep8/package.py
+++ b/var/spack/repos/builtin/packages/py-autopep8/package.py
@@ -1,5 +1,6 @@
 from spack import *
 
+
 class PyAutopep8(Package):
     """Automatic pep8 formatter"""
     homepage = "https://github.com/hhatto/autopep8"
@@ -13,4 +14,3 @@ class PyAutopep8(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-biopython/package.py b/var/spack/repos/builtin/packages/py-biopython/package.py
index bcc889756e..c3edf9735b 100644
--- a/var/spack/repos/builtin/packages/py-biopython/package.py
+++ b/var/spack/repos/builtin/packages/py-biopython/package.py
@@ -24,8 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class PyBiopython(Package):
-    """It is a distributed collaborative effort to develop Python libraries and applications which address the needs of current and future work in bioinformatics."""
+    """A distributed collaborative effort to develop Python libraries and
+       applications which address the needs of current and future work in
+       bioinformatics.
+
+    """
     homepage = "http://biopython.org/wiki/Main_Page"
     url      = "http://biopython.org/DIST/biopython-1.65.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-blessings/package.py b/var/spack/repos/builtin/packages/py-blessings/package.py
index 8d7a2343d1..e6fc6aa983 100644
--- a/var/spack/repos/builtin/packages/py-blessings/package.py
+++ b/var/spack/repos/builtin/packages/py-blessings/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyBlessings(Package):
     """A nicer, kinder way to write to the terminal """
     homepage = "https://github.com/erikrose/blessings"
diff --git a/var/spack/repos/builtin/packages/py-bottleneck/package.py b/var/spack/repos/builtin/packages/py-bottleneck/package.py
index 2483fab85f..ad2ee749d3 100644
--- a/var/spack/repos/builtin/packages/py-bottleneck/package.py
+++ b/var/spack/repos/builtin/packages/py-bottleneck/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class PyBottleneck(Package):
-    """Bottleneck is a collection of fast NumPy array functions written in Cython."""
+    """A collection of fast NumPy array functions written in Cython."""
     homepage = "https://pypi.python.org/pypi/Bottleneck/1.0.0"
     url      = "https://pypi.python.org/packages/source/B/Bottleneck/Bottleneck-1.0.0.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-cffi/package.py b/var/spack/repos/builtin/packages/py-cffi/package.py
index e54d50fa50..3c1044783f 100644
--- a/var/spack/repos/builtin/packages/py-cffi/package.py
+++ b/var/spack/repos/builtin/packages/py-cffi/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyCffi(Package):
     """Foreign Function Interface for Python calling C code"""
     homepage = "http://cffi.readthedocs.org/en/latest/"
diff --git a/var/spack/repos/builtin/packages/py-coverage/package.py b/var/spack/repos/builtin/packages/py-coverage/package.py
index b7eaf58cd6..c2a698b0bd 100644
--- a/var/spack/repos/builtin/packages/py-coverage/package.py
+++ b/var/spack/repos/builtin/packages/py-coverage/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyCoverage(Package):
     """ Testing coverage checker for python """
     # FIXME: add a proper url for your package's homepage here.
diff --git a/var/spack/repos/builtin/packages/py-csvkit/package.py b/var/spack/repos/builtin/packages/py-csvkit/package.py
index 2deaa2f74e..5f50e3b6c2 100644
--- a/var/spack/repos/builtin/packages/py-csvkit/package.py
+++ b/var/spack/repos/builtin/packages/py-csvkit/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyCsvkit(Package):
     """A library of utilities for working with CSV, the king of tabular file
     formats"""
diff --git a/var/spack/repos/builtin/packages/py-cython/package.py b/var/spack/repos/builtin/packages/py-cython/package.py
index 5ccc508697..4b3e1cabe1 100644
--- a/var/spack/repos/builtin/packages/py-cython/package.py
+++ b/var/spack/repos/builtin/packages/py-cython/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyCython(Package):
     """The Cython compiler for writing C extensions for the Python language."""
     homepage = "https://pypi.python.org/pypi/cython"
diff --git a/var/spack/repos/builtin/packages/py-dask/package.py b/var/spack/repos/builtin/packages/py-dask/package.py
index b7dbab3d97..4bc2c6fc99 100644
--- a/var/spack/repos/builtin/packages/py-dask/package.py
+++ b/var/spack/repos/builtin/packages/py-dask/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyDask(Package):
     """Minimal task scheduling abstraction"""
     homepage = "https://github.com/dask/dask/"
diff --git a/var/spack/repos/builtin/packages/py-dateutil/package.py b/var/spack/repos/builtin/packages/py-dateutil/package.py
index dfd1e143d9..40945232c1 100644
--- a/var/spack/repos/builtin/packages/py-dateutil/package.py
+++ b/var/spack/repos/builtin/packages/py-dateutil/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyDateutil(Package):
     """Extensions to the standard Python datetime module."""
     homepage = "https://pypi.python.org/pypi/dateutil"
diff --git a/var/spack/repos/builtin/packages/py-dbf/package.py b/var/spack/repos/builtin/packages/py-dbf/package.py
index 09c93de428..7f83bce75e 100644
--- a/var/spack/repos/builtin/packages/py-dbf/package.py
+++ b/var/spack/repos/builtin/packages/py-dbf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyDbf(Package):
     """Pure python package for reading/writing dBase, FoxPro, and Visual FoxPro
     .dbf files (including memos)"""
diff --git a/var/spack/repos/builtin/packages/py-decorator/package.py b/var/spack/repos/builtin/packages/py-decorator/package.py
index bd78f262f4..9101b07a0d 100644
--- a/var/spack/repos/builtin/packages/py-decorator/package.py
+++ b/var/spack/repos/builtin/packages/py-decorator/package.py
@@ -24,8 +24,11 @@
 ##############################################################################
 from spack import *
 
+
 class PyDecorator(Package):
-    """The aim of the decorator module it to simplify the usage of decorators for the average programmer, and to popularize decorators by showing various non-trivial examples."""
+    """The aim of the decorator module it to simplify the usage of decorators
+       for the average programmer, and to popularize decorators by showing
+       various non-trivial examples."""
     homepage = "https://github.com/micheles/decorator"
     url      = "https://pypi.python.org/packages/source/d/decorator/decorator-4.0.9.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-epydoc/package.py b/var/spack/repos/builtin/packages/py-epydoc/package.py
index b370075e02..9d4b93dad4 100644
--- a/var/spack/repos/builtin/packages/py-epydoc/package.py
+++ b/var/spack/repos/builtin/packages/py-epydoc/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class PyEpydoc(Package):
-    """Epydoc is a tool for generating API documentation documentation for Python modules, based on their docstrings."""
+    """Epydoc is a tool for generating API documentation documentation for
+       Python modules, based on their docstrings."""
     homepage = "https://pypi.python.org/pypi/epydoc"
     url      = "https://pypi.python.org/packages/source/e/epydoc/epydoc-3.0.1.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-funcsigs/package.py b/var/spack/repos/builtin/packages/py-funcsigs/package.py
index 11ba639b85..c3d37f6b98 100644
--- a/var/spack/repos/builtin/packages/py-funcsigs/package.py
+++ b/var/spack/repos/builtin/packages/py-funcsigs/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class PyFuncsigs(Package):
     """Python function signatures from PEP362 for Python 2.6, 2.7 and 3.2."""
@@ -38,6 +38,3 @@ class PyFuncsigs(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
-
-
diff --git a/var/spack/repos/builtin/packages/py-genders/package.py b/var/spack/repos/builtin/packages/py-genders/package.py
index 44f6cb1ef4..f919a7e6c2 100644
--- a/var/spack/repos/builtin/packages/py-genders/package.py
+++ b/var/spack/repos/builtin/packages/py-genders/package.py
@@ -24,16 +24,19 @@
 ##############################################################################
 from spack import *
 
+
 class PyGenders(Package):
-    """Genders is a static cluster configuration database used for cluster configuration management. It is used by a variety of tools and scripts for management of large clusters."""
+    """Genders is a static cluster configuration database used for cluster
+       configuration management. It is used by a variety of tools and scripts
+       for management of large clusters."""
     homepage = "https://github.com/chaos/genders"
     url      = "https://github.com/chaos/genders/releases/download/genders-1-22-1/genders-1.22.tar.gz"
 
-    version('1.22', '9ea59a024dcbddb85b0ed25ddca9bc8e', url='https://github.com/chaos/genders/releases/download/genders-1-22-1/genders-1.22.tar.gz')
+    version('1.22', '9ea59a024dcbddb85b0ed25ddca9bc8e',
+            url='https://github.com/chaos/genders/releases/download/genders-1-22-1/genders-1.22.tar.gz')
     extends('python')
 
     def install(self, spec, prefix):
-        configure("--prefix=%s" %prefix)
+        configure("--prefix=%s" % prefix)
         make(parallel=False)
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/py-gnuplot/package.py b/var/spack/repos/builtin/packages/py-gnuplot/package.py
index b08b03d1f1..a448a66e51 100644
--- a/var/spack/repos/builtin/packages/py-gnuplot/package.py
+++ b/var/spack/repos/builtin/packages/py-gnuplot/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class PyGnuplot(Package):
-    """Gnuplot.py is a Python package that allows you to create graphs from within Python using the gnuplot plotting program."""
+    """Gnuplot.py is a Python package that allows you to create graphs from
+       within Python using the gnuplot plotting program."""
     homepage = "http://gnuplot-py.sourceforge.net/"
     url      = "http://downloads.sourceforge.net/project/gnuplot-py/Gnuplot-py/1.8/gnuplot-py-1.8.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-ipython/package.py b/var/spack/repos/builtin/packages/py-ipython/package.py
index b583609953..ac3291e21e 100644
--- a/var/spack/repos/builtin/packages/py-ipython/package.py
+++ b/var/spack/repos/builtin/packages/py-ipython/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class PyIpython(Package):
-    """IPython provides a rich toolkit to help you make the most out of using Python interactively."""
+    """IPython provides a rich toolkit to help you make the most out of using
+       Python interactively."""
     homepage = "https://pypi.python.org/pypi/ipython"
     url      = "https://pypi.python.org/packages/source/i/ipython/ipython-2.3.1.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-jdcal/package.py b/var/spack/repos/builtin/packages/py-jdcal/package.py
index fd1d6b4419..32acf75131 100644
--- a/var/spack/repos/builtin/packages/py-jdcal/package.py
+++ b/var/spack/repos/builtin/packages/py-jdcal/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyJdcal(Package):
     """Julian dates from proleptic Gregorian and Julian calendars"""
 
diff --git a/var/spack/repos/builtin/packages/py-jinja2/package.py b/var/spack/repos/builtin/packages/py-jinja2/package.py
index 57f26e3b90..943edf521a 100644
--- a/var/spack/repos/builtin/packages/py-jinja2/package.py
+++ b/var/spack/repos/builtin/packages/py-jinja2/package.py
@@ -48,4 +48,3 @@ class PyJinja2(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-lockfile/package.py b/var/spack/repos/builtin/packages/py-lockfile/package.py
index 38cc81b895..b873625bdb 100644
--- a/var/spack/repos/builtin/packages/py-lockfile/package.py
+++ b/var/spack/repos/builtin/packages/py-lockfile/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyLockfile(Package):
     """The lockfile package exports a LockFile class which provides a
        simple API for locking files. Unlike the Windows msvcrt.locking
diff --git a/var/spack/repos/builtin/packages/py-logilab-common/package.py b/var/spack/repos/builtin/packages/py-logilab-common/package.py
index 6dab4a40e4..ac1b933e43 100644
--- a/var/spack/repos/builtin/packages/py-logilab-common/package.py
+++ b/var/spack/repos/builtin/packages/py-logilab-common/package.py
@@ -39,4 +39,3 @@ class PyLogilabCommon(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-mako/package.py b/var/spack/repos/builtin/packages/py-mako/package.py
index 56741ec11f..18a8dc0e68 100644
--- a/var/spack/repos/builtin/packages/py-mako/package.py
+++ b/var/spack/repos/builtin/packages/py-mako/package.py
@@ -24,12 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class PyMako(Package):
-    """A super-fast templating language that borrows the best 
-    ideas from the existing templating languages."""
+    """A super-fast templating language that borrows the best
+       ideas from the existing templating languages."""
 
     homepage = "https://pypi.python.org/pypi/mako"
-    url      = "https://pypi.python.org/packages/source/M/Mako/Mako-1.0.1.tar.gz"
+    url = "https://pypi.python.org/packages/source/M/Mako/Mako-1.0.1.tar.gz"
 
     version('1.0.1', '9f0aafd177b039ef67b90ea350497a54')
 
diff --git a/var/spack/repos/builtin/packages/py-markupsafe/package.py b/var/spack/repos/builtin/packages/py-markupsafe/package.py
index ee396de7be..0a039d1d47 100644
--- a/var/spack/repos/builtin/packages/py-markupsafe/package.py
+++ b/var/spack/repos/builtin/packages/py-markupsafe/package.py
@@ -48,4 +48,3 @@ class PyMarkupsafe(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-matplotlib/package.py b/var/spack/repos/builtin/packages/py-matplotlib/package.py
index b5eb8a53c4..c454a47ec3 100644
--- a/var/spack/repos/builtin/packages/py-matplotlib/package.py
+++ b/var/spack/repos/builtin/packages/py-matplotlib/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class PyMatplotlib(Package):
     """Python plotting package."""
     homepage = "https://pypi.python.org/pypi/matplotlib"
@@ -65,12 +66,12 @@ def install(self, spec, prefix):
         if str(self.version) in ['1.4.2', '1.4.3']:
             # hack to fix configuration file
             config_file = None
-            for p,d,f in os.walk(prefix.lib):
+            for p, d, f in os.walk(prefix.lib):
                 for file in f:
                     if file.find('matplotlibrc') != -1:
                         config_file = join_path(p, 'matplotlibrc')
                         print config_file
-            if config_file == None:
+            if config_file is None:
                 raise InstallError('could not find config file')
             filter_file(r'backend      : pyside',
                         'backend      : Qt4Agg',
diff --git a/var/spack/repos/builtin/packages/py-mock/package.py b/var/spack/repos/builtin/packages/py-mock/package.py
index f4c178de67..2c70535f19 100644
--- a/var/spack/repos/builtin/packages/py-mock/package.py
+++ b/var/spack/repos/builtin/packages/py-mock/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyMock(Package):
     """mock is a library for testing in Python. It allows you to replace parts
     of your system under test with mock objects and make assertions about how
diff --git a/var/spack/repos/builtin/packages/py-mpi4py/package.py b/var/spack/repos/builtin/packages/py-mpi4py/package.py
index a749e16779..1f0e52804e 100644
--- a/var/spack/repos/builtin/packages/py-mpi4py/package.py
+++ b/var/spack/repos/builtin/packages/py-mpi4py/package.py
@@ -24,8 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class PyMpi4py(Package):
-    """This package provides Python bindings for the Message Passing Interface (MPI) standard. It is implemented on top of the MPI-1/MPI-2 specification and exposes an API which grounds on the standard MPI-2 C++ bindings."""
+    """This package provides Python bindings for the Message Passing
+       Interface (MPI) standard. It is implemented on top of the
+       MPI-1/MPI-2 specification and exposes an API which grounds on the
+       standard MPI-2 C++ bindings.
+
+    """
     homepage = "https://pypi.python.org/pypi/mpi4py"
     url      = "https://pypi.python.org/packages/source/m/mpi4py/mpi4py-1.3.1.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-mpmath/package.py b/var/spack/repos/builtin/packages/py-mpmath/package.py
index 899ff053a9..e5bae34694 100644
--- a/var/spack/repos/builtin/packages/py-mpmath/package.py
+++ b/var/spack/repos/builtin/packages/py-mpmath/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyMpmath(Package):
     """A Python library for arbitrary-precision floating-point arithmetic."""
     homepage = "http://mpmath.org"
diff --git a/var/spack/repos/builtin/packages/py-mx/package.py b/var/spack/repos/builtin/packages/py-mx/package.py
index d0f9f7cadf..f5631916f6 100644
--- a/var/spack/repos/builtin/packages/py-mx/package.py
+++ b/var/spack/repos/builtin/packages/py-mx/package.py
@@ -24,8 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class PyMx(Package):
-    """The eGenix.com mx Base Distribution for Python is a collection of professional quality software tools which enhance Python's usability in many important areas such as fast text searching, date/time processing and high speed data types."""
+    """The eGenix.com mx Base Distribution for Python is a collection of
+       professional quality software tools which enhance Python's
+       usability in many important areas such as fast text searching,
+       date/time processing and high speed data types.
+
+    """
     homepage = "http://www.egenix.com/products/python/mxBase/"
     url      = "https://downloads.egenix.com/python/egenix-mx-base-3.2.8.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-mysqldb1/package.py b/var/spack/repos/builtin/packages/py-mysqldb1/package.py
index 46b44f34dd..693fda6dbb 100644
--- a/var/spack/repos/builtin/packages/py-mysqldb1/package.py
+++ b/var/spack/repos/builtin/packages/py-mysqldb1/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyMysqldb1(Package):
     """Legacy mysql bindings for python"""
     homepage = "https://github.com/farcepest/MySQLdb1"
@@ -36,4 +37,3 @@ class PyMysqldb1(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-netcdf/package.py b/var/spack/repos/builtin/packages/py-netcdf/package.py
index 9a354cb1c1..e4f67d75a6 100644
--- a/var/spack/repos/builtin/packages/py-netcdf/package.py
+++ b/var/spack/repos/builtin/packages/py-netcdf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyNetcdf(Package):
     """Python interface to the netCDF Library."""
     homepage = "http://unidata.github.io/netcdf4-python"
diff --git a/var/spack/repos/builtin/packages/py-numexpr/package.py b/var/spack/repos/builtin/packages/py-numexpr/package.py
index fd8d7dc0c6..b3b2e1d47d 100644
--- a/var/spack/repos/builtin/packages/py-numexpr/package.py
+++ b/var/spack/repos/builtin/packages/py-numexpr/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import re
+
 
 class PyNumexpr(Package):
     """Fast numerical expression evaluator for NumPy"""
diff --git a/var/spack/repos/builtin/packages/py-openpyxl/package.py b/var/spack/repos/builtin/packages/py-openpyxl/package.py
index 624da58ff3..fa32cb879f 100644
--- a/var/spack/repos/builtin/packages/py-openpyxl/package.py
+++ b/var/spack/repos/builtin/packages/py-openpyxl/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyOpenpyxl(Package):
     """A Python library to read/write Excel 2007 xlsx/xlsm files"""
 
diff --git a/var/spack/repos/builtin/packages/py-pandas/package.py b/var/spack/repos/builtin/packages/py-pandas/package.py
index 8bd4227faf..37234ae652 100644
--- a/var/spack/repos/builtin/packages/py-pandas/package.py
+++ b/var/spack/repos/builtin/packages/py-pandas/package.py
@@ -23,10 +23,18 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class PyPandas(Package):
-    """pandas is a Python package providing fast, flexible, and expressive data structures designed to make working with relational or labeled data both easy and intuitive. It aims to be the fundamental high-level building block for doing practical, real world data analysis in Python. Additionally, it has the broader goal of becoming the most powerful and flexible open source data analysis / manipulation tool available in any language."""
+    """pandas is a Python package providing fast, flexible, and expressive
+       data structures designed to make working with relational or
+       labeled data both easy and intuitive. It aims to be the
+       fundamental high-level building block for doing practical, real
+       world data analysis in Python. Additionally, it has the broader
+       goal of becoming the most powerful and flexible open source data
+       analysis / manipulation tool available in any language.
+
+    """
     homepage = "http://pandas.pydata.org/"
     url      = "https://pypi.python.org/packages/source/p/pandas/pandas-0.16.0.tar.gz#md5=bfe311f05dc0c351f8955fbd1e296e73"
 
diff --git a/var/spack/repos/builtin/packages/py-pbr/package.py b/var/spack/repos/builtin/packages/py-pbr/package.py
index 8502b0b364..a0cfe0e5a5 100644
--- a/var/spack/repos/builtin/packages/py-pbr/package.py
+++ b/var/spack/repos/builtin/packages/py-pbr/package.py
@@ -23,10 +23,11 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class PyPbr(Package):
-    """PBR is a library that injects some useful and sensible default behaviors into your setuptools run."""
+    """PBR is a library that injects some useful and sensible default
+       behaviors into your setuptools run."""
     homepage = "https://pypi.python.org/pypi/pbr"
     url      = "https://pypi.python.org/packages/source/p/pbr/pbr-1.8.1.tar.gz"
 
@@ -38,5 +39,3 @@ class PyPbr(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
-
diff --git a/var/spack/repos/builtin/packages/py-pep8/package.py b/var/spack/repos/builtin/packages/py-pep8/package.py
index ffcc2b318c..87d1da9ab0 100644
--- a/var/spack/repos/builtin/packages/py-pep8/package.py
+++ b/var/spack/repos/builtin/packages/py-pep8/package.py
@@ -1,5 +1,6 @@
 from spack import *
 
+
 class PyPep8(Package):
     """python pep8 format checker"""
     homepage = "https://github.com/PyCQA/pycodestyle"
@@ -12,4 +13,3 @@ class PyPep8(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-periodictable/package.py b/var/spack/repos/builtin/packages/py-periodictable/package.py
index 608f4e16c1..51d9cc2046 100644
--- a/var/spack/repos/builtin/packages/py-periodictable/package.py
+++ b/var/spack/repos/builtin/packages/py-periodictable/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPeriodictable(Package):
     """nose extends the test loading and running features of unittest,
     making it easier to write, find and run tests."""
diff --git a/var/spack/repos/builtin/packages/py-pexpect/package.py b/var/spack/repos/builtin/packages/py-pexpect/package.py
index dd95af9643..8a99c0473b 100644
--- a/var/spack/repos/builtin/packages/py-pexpect/package.py
+++ b/var/spack/repos/builtin/packages/py-pexpect/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPexpect(Package):
     """Pexpect allows easy control of interactive console applications."""
     homepage = "https://pypi.python.org/pypi/pexpect"
diff --git a/var/spack/repos/builtin/packages/py-phonopy/package.py b/var/spack/repos/builtin/packages/py-phonopy/package.py
index a3a4b7a9f7..d5b3313a98 100644
--- a/var/spack/repos/builtin/packages/py-phonopy/package.py
+++ b/var/spack/repos/builtin/packages/py-phonopy/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPhonopy(Package):
     """Phonopy is an open source package for phonon
     calculations at harmonic and quasi-harmonic levels."""
diff --git a/var/spack/repos/builtin/packages/py-pillow/package.py b/var/spack/repos/builtin/packages/py-pillow/package.py
index 13a09f63cf..aae5727d4e 100644
--- a/var/spack/repos/builtin/packages/py-pillow/package.py
+++ b/var/spack/repos/builtin/packages/py-pillow/package.py
@@ -53,7 +53,8 @@ class PyPillow(Package):
     variant('tiff', default=False, description='Access to TIFF files')
     variant('freetype', default=False, description='Font related services')
     variant('lcms', default=False, description='Color management')
-    variant('jpeg2000', default=False, description='Provide JPEG 2000 functionality')
+    variant('jpeg2000', default=False,
+            description='Provide JPEG 2000 functionality')
 
     # Spack does not (yet) support these modes of building
     # variant('webp', default=False, description='Provide the WebP format')
diff --git a/var/spack/repos/builtin/packages/py-pmw/package.py b/var/spack/repos/builtin/packages/py-pmw/package.py
index 062bfe9c03..e0a332a6bf 100644
--- a/var/spack/repos/builtin/packages/py-pmw/package.py
+++ b/var/spack/repos/builtin/packages/py-pmw/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class PyPmw(Package):
-    """Pmw is a toolkit for building high-level compound widgets, or megawidgets, constructed using other widgets as component parts."""
+    """Pmw is a toolkit for building high-level compound widgets, or
+       megawidgets, constructed using other widgets as component parts."""
     homepage = "https://pypi.python.org/pypi/Pmw"
     url      = "https://pypi.python.org/packages/source/P/Pmw/Pmw-2.0.0.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-py2neo/package.py b/var/spack/repos/builtin/packages/py-py2neo/package.py
index 02f37d8b78..a79c2e477b 100644
--- a/var/spack/repos/builtin/packages/py-py2neo/package.py
+++ b/var/spack/repos/builtin/packages/py-py2neo/package.py
@@ -43,4 +43,3 @@ class PyPy2neo(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-pychecker/package.py b/var/spack/repos/builtin/packages/py-pychecker/package.py
index 137c5f491c..e81c3dbc9b 100644
--- a/var/spack/repos/builtin/packages/py-pychecker/package.py
+++ b/var/spack/repos/builtin/packages/py-pychecker/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPychecker(Package):
     """"""
     homepage = "http://pychecker.sourceforge.net/"
diff --git a/var/spack/repos/builtin/packages/py-pycparser/package.py b/var/spack/repos/builtin/packages/py-pycparser/package.py
index 9afba50077..ef1b772ffc 100644
--- a/var/spack/repos/builtin/packages/py-pycparser/package.py
+++ b/var/spack/repos/builtin/packages/py-pycparser/package.py
@@ -24,14 +24,14 @@
 ##############################################################################
 from spack import *
 
+
 class PyPycparser(Package):
-    """pycparser is a complete parser of the C language, written in pure python"""
+    """A complete parser of the C language, written in pure python."""
     homepage = "https://github.com/eliben/pycparser"
     url      = "https://pypi.python.org/packages/source/p/pycparser/pycparser-2.13.tar.gz"
 
     version('2.13', 'e4fe1a2d341b22e25da0d22f034ef32f')
 
-    
     extends('python')
     depends_on('py-setuptools', type='build')
 
diff --git a/var/spack/repos/builtin/packages/py-pyelftools/package.py b/var/spack/repos/builtin/packages/py-pyelftools/package.py
index 0c4a7a36cc..bf781daf83 100644
--- a/var/spack/repos/builtin/packages/py-pyelftools/package.py
+++ b/var/spack/repos/builtin/packages/py-pyelftools/package.py
@@ -24,8 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class PyPyelftools(Package):
-    """A pure-Python library for parsing and analyzing ELF files and DWARF debugging information"""
+    """A pure-Python library for parsing and analyzing ELF files and DWARF
+       debugging information"""
     homepage = "https://pypi.python.org/pypi/pyelftools"
     url      = "https://pypi.python.org/packages/source/p/pyelftools/pyelftools-0.23.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-pygments/package.py b/var/spack/repos/builtin/packages/py-pygments/package.py
index 0ca15dd10d..2d22bd9f03 100644
--- a/var/spack/repos/builtin/packages/py-pygments/package.py
+++ b/var/spack/repos/builtin/packages/py-pygments/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPygments(Package):
     """Pygments is a syntax highlighting package written in Python."""
     homepage = "https://pypi.python.org/pypi/pygments"
diff --git a/var/spack/repos/builtin/packages/py-pylint/package.py b/var/spack/repos/builtin/packages/py-pylint/package.py
index 7107b2987f..c505d44530 100644
--- a/var/spack/repos/builtin/packages/py-pylint/package.py
+++ b/var/spack/repos/builtin/packages/py-pylint/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import re
+
 
 class PyPylint(Package):
     """array processing for numbers, strings, records, and objects."""
diff --git a/var/spack/repos/builtin/packages/py-pypar/package.py b/var/spack/repos/builtin/packages/py-pypar/package.py
index f762789dea..6fef71304c 100644
--- a/var/spack/repos/builtin/packages/py-pypar/package.py
+++ b/var/spack/repos/builtin/packages/py-pypar/package.py
@@ -24,12 +24,16 @@
 ##############################################################################
 from spack import *
 
+
 class PyPypar(Package):
-    """Pypar is an efficient but easy-to-use module that allows programs written in Python to run in parallel on multiple processors and communicate using MPI."""
+    """Pypar is an efficient but easy-to-use module that allows programs
+       written in Python to run in parallel on multiple processors and
+       communicate using MPI."""
     homepage = "http://code.google.com/p/pypar/"
     url      = "https://pypar.googlecode.com/files/pypar-2.1.5_108.tgz"
 
-    version('2.1.5_108', '7a1f28327d2a3b679f9455c843d850b8', url='https://pypar.googlecode.com/files/pypar-2.1.5_108.tgz')
+    version('2.1.5_108', '7a1f28327d2a3b679f9455c843d850b8',
+            url='https://pypar.googlecode.com/files/pypar-2.1.5_108.tgz')
     extends('python')
     depends_on('mpi')
 
diff --git a/var/spack/repos/builtin/packages/py-pyparsing/package.py b/var/spack/repos/builtin/packages/py-pyparsing/package.py
index 0423aa3bdb..67d255b02d 100644
--- a/var/spack/repos/builtin/packages/py-pyparsing/package.py
+++ b/var/spack/repos/builtin/packages/py-pyparsing/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPyparsing(Package):
     """A Python Parsing Module."""
     homepage = "https://pypi.python.org/pypi/pyparsing"
diff --git a/var/spack/repos/builtin/packages/py-pyqt/package.py b/var/spack/repos/builtin/packages/py-pyqt/package.py
index 05fb7aa22c..de68bfaa90 100644
--- a/var/spack/repos/builtin/packages/py-pyqt/package.py
+++ b/var/spack/repos/builtin/packages/py-pyqt/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPyqt(Package):
     """PyQt is a set of Python v2 and v3 bindings for Digia's Qt
        application framework and runs on all platforms supported by Qt
diff --git a/var/spack/repos/builtin/packages/py-pyside/package.py b/var/spack/repos/builtin/packages/py-pyside/package.py
index cd174ce658..1cb3e4745f 100644
--- a/var/spack/repos/builtin/packages/py-pyside/package.py
+++ b/var/spack/repos/builtin/packages/py-pyside/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class PyPyside(Package):
     """Python bindings for Qt."""
     homepage = "https://pypi.python.org/pypi/pyside"
@@ -43,7 +44,8 @@ def patch(self):
         # Figure out the special RPATH
         pypkg = self.spec['python'].package
         rpath = self.rpath
-        rpath.append(os.path.join(self.prefix, pypkg.site_packages_dir, 'PySide'))
+        rpath.append(os.path.join(
+            self.prefix, pypkg.site_packages_dir, 'PySide'))
 
         # Add Spack's standard CMake args to the sub-builds.
         # They're called BY setup.py so we have to patch it.
@@ -61,7 +63,6 @@ def patch(self):
             r'#rpath_cmd(pyside_path, srcpath)',
             'pyside_postinstall.py')
 
-
     def install(self, spec, prefix):
         python('setup.py', 'install',
                '--prefix=%s' % prefix,
diff --git a/var/spack/repos/builtin/packages/py-python-daemon/package.py b/var/spack/repos/builtin/packages/py-python-daemon/package.py
index c2c7c4de4f..a30dc00ba4 100644
--- a/var/spack/repos/builtin/packages/py-python-daemon/package.py
+++ b/var/spack/repos/builtin/packages/py-python-daemon/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPythonDaemon(Package):
     """Library to implement a well-behaved Unix daemon process.
 
@@ -47,4 +48,3 @@ class PyPythonDaemon(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-pytz/package.py b/var/spack/repos/builtin/packages/py-pytz/package.py
index caf2c90e73..96f686d591 100644
--- a/var/spack/repos/builtin/packages/py-pytz/package.py
+++ b/var/spack/repos/builtin/packages/py-pytz/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPytz(Package):
     """World timezone definitions, modern and historical."""
     homepage = "https://pypi.python.org/pypi/pytz"
diff --git a/var/spack/repos/builtin/packages/py-pyyaml/package.py b/var/spack/repos/builtin/packages/py-pyyaml/package.py
index c0e22ba681..8da391fac1 100644
--- a/var/spack/repos/builtin/packages/py-pyyaml/package.py
+++ b/var/spack/repos/builtin/packages/py-pyyaml/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyPyyaml(Package):
     """PyYAML is a YAML parser and emitter for Python."""
     homepage = "http://pyyaml.org/wiki/PyYAML"
diff --git a/var/spack/repos/builtin/packages/py-rpy2/package.py b/var/spack/repos/builtin/packages/py-rpy2/package.py
index 8f4771f0eb..f86d813766 100644
--- a/var/spack/repos/builtin/packages/py-rpy2/package.py
+++ b/var/spack/repos/builtin/packages/py-rpy2/package.py
@@ -24,10 +24,16 @@
 ##############################################################################
 from spack import *
 
+
 class PyRpy2(Package):
-    """rpy2 is a redesign and rewrite of rpy. It is providing a low-level interface to R from Python, a proposed high-level interface, including wrappers to graphical libraries, as well as R-like structures and functions."""
+    """rpy2 is a redesign and rewrite of rpy. It is providing a low-level
+       interface to R from Python, a proposed high-level interface,
+       including wrappers to graphical libraries, as well as R-like
+       structures and functions.
+
+    """
     homepage = "https://pypi.python.org/pypi/rpy2"
-    url      = "https://pypi.python.org/packages/source/r/rpy2/rpy2-2.5.4.tar.gz"
+    url = "https://pypi.python.org/packages/source/r/rpy2/rpy2-2.5.4.tar.gz"
 
     version('2.5.4', '115a20ac30883f096da2bdfcab55196d')
     version('2.5.6', 'a36e758b633ce6aec6a5f450bfee980f')
diff --git a/var/spack/repos/builtin/packages/py-scientificpython/package.py b/var/spack/repos/builtin/packages/py-scientificpython/package.py
index 7f7eb76b73..e2273dc164 100644
--- a/var/spack/repos/builtin/packages/py-scientificpython/package.py
+++ b/var/spack/repos/builtin/packages/py-scientificpython/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyScientificpython(Package):
     """ScientificPython is a collection of Python modules for
        scientific computing. It contains support for geometry,
diff --git a/var/spack/repos/builtin/packages/py-scikit-learn/package.py b/var/spack/repos/builtin/packages/py-scikit-learn/package.py
index 1a6112bcf3..3cd7ea74f3 100644
--- a/var/spack/repos/builtin/packages/py-scikit-learn/package.py
+++ b/var/spack/repos/builtin/packages/py-scikit-learn/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyScikitLearn(Package):
     """"""
     homepage = "https://pypi.python.org/pypi/scikit-learn"
diff --git a/var/spack/repos/builtin/packages/py-scipy/package.py b/var/spack/repos/builtin/packages/py-scipy/package.py
index ea3731cf1b..cab516e1df 100644
--- a/var/spack/repos/builtin/packages/py-scipy/package.py
+++ b/var/spack/repos/builtin/packages/py-scipy/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyScipy(Package):
     """Scientific Library for Python."""
     homepage = "http://www.scipy.org/"
@@ -41,7 +42,8 @@ def install(self, spec, prefix):
         if 'atlas' in spec:
             # libatlas.so actually isn't always installed, but this
             # seems to make the build autodetect things correctly.
-            env['ATLAS'] = join_path(spec['atlas'].prefix.lib, 'libatlas.' + dso_suffix)
+            env['ATLAS'] = join_path(
+                spec['atlas'].prefix.lib, 'libatlas.' + dso_suffix)
         else:
             env['BLAS']   = spec['blas'].blas_shared_lib
             env['LAPACK'] = spec['lapack'].lapack_shared_lib
diff --git a/var/spack/repos/builtin/packages/py-shiboken/package.py b/var/spack/repos/builtin/packages/py-shiboken/package.py
index 27188e1417..0713f26ebc 100644
--- a/var/spack/repos/builtin/packages/py-shiboken/package.py
+++ b/var/spack/repos/builtin/packages/py-shiboken/package.py
@@ -25,8 +25,9 @@
 from spack import *
 import os
 
+
 class PyShiboken(Package):
-    """Shiboken generates bindings for C++ libraries using CPython source code."""
+    """Shiboken generates bindings for C++ libraries using CPython."""
     homepage = "https://shiboken.readthedocs.org/"
     url      = "https://pypi.python.org/packages/source/S/Shiboken/Shiboken-1.2.2.tar.gz"
 
@@ -45,7 +46,8 @@ def patch(self):
         # They're called BY setup.py so we have to patch it.
         pypkg = self.spec['python'].package
         rpath = self.rpath
-        rpath.append(os.path.join(self.prefix, pypkg.site_packages_dir, 'Shiboken'))
+        rpath.append(os.path.join(
+            self.prefix, pypkg.site_packages_dir, 'Shiboken'))
 
         filter_file(
             r'OPTION_CMAKE,',
@@ -61,7 +63,6 @@ def patch(self):
             r'#rpath_cmd(shiboken_path, srcpath)',
             'shiboken_postinstall.py')
 
-
     def install(self, spec, prefix):
         python('setup.py', 'install',
                '--prefix=%s' % prefix,
diff --git a/var/spack/repos/builtin/packages/py-sip/package.py b/var/spack/repos/builtin/packages/py-sip/package.py
index fc8e7f5296..9d97f08433 100644
--- a/var/spack/repos/builtin/packages/py-sip/package.py
+++ b/var/spack/repos/builtin/packages/py-sip/package.py
@@ -25,8 +25,10 @@
 from spack import *
 import os
 
+
 class PySip(Package):
-    """SIP is a tool that makes it very easy to create Python bindings for C and C++ libraries."""
+    """SIP is a tool that makes it very easy to create Python bindings for C
+       and C++ libraries."""
     homepage = "http://www.riverbankcomputing.com/software/sip/intro"
     url      = "http://sourceforge.net/projects/pyqt/files/sip/sip-4.16.5/sip-4.16.5.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/py-six/package.py b/var/spack/repos/builtin/packages/py-six/package.py
index eb4846d5af..da0c7aa003 100644
--- a/var/spack/repos/builtin/packages/py-six/package.py
+++ b/var/spack/repos/builtin/packages/py-six/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PySix(Package):
     """Python 2 and 3 compatibility utilities."""
     homepage = "https://pypi.python.org/pypi/six"
diff --git a/var/spack/repos/builtin/packages/py-sphinx/package.py b/var/spack/repos/builtin/packages/py-sphinx/package.py
index d00f1d128b..2295a6a0c3 100644
--- a/var/spack/repos/builtin/packages/py-sphinx/package.py
+++ b/var/spack/repos/builtin/packages/py-sphinx/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PySphinx(Package):
     """Sphinx Documentation Generator."""
     homepage = "http://sphinx-doc.org"
diff --git a/var/spack/repos/builtin/packages/py-sympy/package.py b/var/spack/repos/builtin/packages/py-sympy/package.py
index 5e38fc5be1..3d8b86ac4d 100644
--- a/var/spack/repos/builtin/packages/py-sympy/package.py
+++ b/var/spack/repos/builtin/packages/py-sympy/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PySympy(Package):
     """SymPy is a Python library for symbolic mathematics."""
     homepage = "https://pypi.python.org/pypi/sympy"
diff --git a/var/spack/repos/builtin/packages/py-tappy/package.py b/var/spack/repos/builtin/packages/py-tappy/package.py
index b10244acdd..03e9528ad7 100644
--- a/var/spack/repos/builtin/packages/py-tappy/package.py
+++ b/var/spack/repos/builtin/packages/py-tappy/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyTappy(Package):
     """Python TAP interface module for unit tests"""
     homepage = "https://github.com/mblayman/tappy"
diff --git a/var/spack/repos/builtin/packages/py-tuiview/package.py b/var/spack/repos/builtin/packages/py-tuiview/package.py
index 56056ebad1..672a3ee587 100644
--- a/var/spack/repos/builtin/packages/py-tuiview/package.py
+++ b/var/spack/repos/builtin/packages/py-tuiview/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyTuiview(Package):
     """
        TuiView is a lightweight raster GIS with powerful raster attribute
diff --git a/var/spack/repos/builtin/packages/py-twisted/package.py b/var/spack/repos/builtin/packages/py-twisted/package.py
index 2ce83cd24c..edf1e7b0d7 100644
--- a/var/spack/repos/builtin/packages/py-twisted/package.py
+++ b/var/spack/repos/builtin/packages/py-twisted/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyTwisted(Package):
     """An asynchronous networking framework written in Python"""
     homepage = "https://twistedmatrix.com/"
diff --git a/var/spack/repos/builtin/packages/py-urwid/package.py b/var/spack/repos/builtin/packages/py-urwid/package.py
index 48ba84e7bc..943fb250f6 100644
--- a/var/spack/repos/builtin/packages/py-urwid/package.py
+++ b/var/spack/repos/builtin/packages/py-urwid/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyUrwid(Package):
     """A full-featured console UI library"""
     homepage = "http://urwid.org/"
@@ -37,4 +38,3 @@ class PyUrwid(Package):
 
     def install(self, spec, prefix):
         python('setup.py', 'install', '--prefix=%s' % prefix)
-
diff --git a/var/spack/repos/builtin/packages/py-virtualenv/package.py b/var/spack/repos/builtin/packages/py-virtualenv/package.py
index d6b33ae175..0ed567df95 100644
--- a/var/spack/repos/builtin/packages/py-virtualenv/package.py
+++ b/var/spack/repos/builtin/packages/py-virtualenv/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import shutil
+
 
 class PyVirtualenv(Package):
     """virtualenv is a tool to create isolated Python environments."""
diff --git a/var/spack/repos/builtin/packages/py-wheel/package.py b/var/spack/repos/builtin/packages/py-wheel/package.py
index 9e383a9a19..f0ad340835 100644
--- a/var/spack/repos/builtin/packages/py-wheel/package.py
+++ b/var/spack/repos/builtin/packages/py-wheel/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyWheel(Package):
     """A built-package format for Python."""
 
diff --git a/var/spack/repos/builtin/packages/py-xlrd/package.py b/var/spack/repos/builtin/packages/py-xlrd/package.py
index 9220f90340..81c3c928c0 100644
--- a/var/spack/repos/builtin/packages/py-xlrd/package.py
+++ b/var/spack/repos/builtin/packages/py-xlrd/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyXlrd(Package):
     """Library for developers to extract data from Microsoft Excel (tm)
     spreadsheet files"""
diff --git a/var/spack/repos/builtin/packages/py-yapf/package.py b/var/spack/repos/builtin/packages/py-yapf/package.py
index f7fe4037a1..bc26b82b07 100644
--- a/var/spack/repos/builtin/packages/py-yapf/package.py
+++ b/var/spack/repos/builtin/packages/py-yapf/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class PyYapf(Package):
     """ Yet Another Python Formatter """
     homepage = "https://github.com/google/yapf"
diff --git a/var/spack/repos/builtin/packages/python/package.py b/var/spack/repos/builtin/packages/python/package.py
index f755527607..43f600e2f6 100644
--- a/var/spack/repos/builtin/packages/python/package.py
+++ b/var/spack/repos/builtin/packages/python/package.py
@@ -55,7 +55,8 @@ class Python(Package):
     extendable = True
 
     variant('tk',   default=False, description='Provide support for Tkinter')
-    variant('ucs4', default=False, description='Enable UCS4 (wide) unicode strings')
+    variant('ucs4', default=False,
+            description='Enable UCS4 (wide) unicode strings')
     # From https://docs.python.org/2/c-api/unicode.html: Python's default
     # builds use a 16-bit type for Py_UNICODE and store Unicode values
     # internally as UCS2. It is also possible to build a UCS4 version of Python
diff --git a/var/spack/repos/builtin/packages/qhull/package.py b/var/spack/repos/builtin/packages/qhull/package.py
index f7cbcc2736..2733d8b652 100644
--- a/var/spack/repos/builtin/packages/qhull/package.py
+++ b/var/spack/repos/builtin/packages/qhull/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Qhull(Package):
     """Qhull computes the convex hull, Delaunay triangulation, Voronoi
        diagram, halfspace intersection about a point, furt hest-site
@@ -44,7 +45,7 @@ class Qhull(Package):
 
     # https://github.com/qhull/qhull/pull/5
     patch('qhull-iterator.patch', when='@1.0')
-    
+
     depends_on('cmake', type='build')
 
     def install(self, spec, prefix):
diff --git a/var/spack/repos/builtin/packages/qrupdate/package.py b/var/spack/repos/builtin/packages/qrupdate/package.py
index 314950dc36..f6b4c80cf4 100644
--- a/var/spack/repos/builtin/packages/qrupdate/package.py
+++ b/var/spack/repos/builtin/packages/qrupdate/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Qrupdate(Package):
     """qrupdate is a Fortran library for fast updates of QR and
     Cholesky decompositions."""
diff --git a/var/spack/repos/builtin/packages/qt/package.py b/var/spack/repos/builtin/packages/qt/package.py
index f33e5c2d0e..e496a3e4d5 100644
--- a/var/spack/repos/builtin/packages/qt/package.py
+++ b/var/spack/repos/builtin/packages/qt/package.py
@@ -25,6 +25,7 @@
 from spack import *
 import os
 
+
 class Qt(Package):
     """Qt is a comprehensive cross-platform C++ application framework."""
     homepage = 'http://qt.io'
@@ -37,15 +38,17 @@ class Qt(Package):
     version('4.8.6',  '2edbe4d6c2eff33ef91732602f3518eb')
     version('3.3.8b', '9f05b4125cfe477cc52c9742c3c09009')
 
-    # Add patch for compile issues with qt3 found with use in the OpenSpeedShop project
-    variant('krellpatch', default=False, description="Build with openspeedshop based patch.")
+    # Add patch for compile issues with qt3 found with use in the
+    # OpenSpeedShop project
+    variant('krellpatch', default=False,
+            description="Build with openspeedshop based patch.")
     variant('mesa',       default=False, description="Depend on mesa.")
     variant('gtk',        default=False, description="Build with gtkplus.")
 
     patch('qt3krell.patch', when='@3.3.8b+krellpatch')
 
     # Use system openssl for security.
-    #depends_on("openssl")
+    # depends_on("openssl")
 
     depends_on("glib")
     depends_on("gtkplus", when='+gtk')
@@ -69,43 +72,39 @@ class Qt(Package):
     depends_on("mesa", when='@4:+mesa')
     depends_on("libxcb")
 
-
     def url_for_version(self, version):
         url = "http://download.qt.io/archive/qt/"
 
         if version >= Version('5'):
             url += "%s/%s/single/qt-everywhere-opensource-src-%s.tar.gz" % \
-                    (version.up_to(2), version, version)
+                (version.up_to(2), version, version)
         elif version >= Version('4.8'):
             url += "%s/%s/qt-everywhere-opensource-src-%s.tar.gz" % \
-                    (version.up_to(2), version, version)
+                (version.up_to(2), version, version)
         elif version >= Version('4.6'):
             url += "%s/qt-everywhere-opensource-src-%s.tar.gz" % \
-                    (version.up_to(2), version)
+                (version.up_to(2), version)
         elif version >= Version('4.0'):
             url += "%s/qt-x11-opensource-src-%s.tar.gz" % \
-                    (version.up_to(2), version)
+                (version.up_to(2), version)
         elif version >= Version('3'):
             url += "%s/qt-x11-free-%s.tar.gz" % \
-                    (version.up_to(1), version)
+                (version.up_to(1), version)
         elif version >= Version('2.1'):
             url += "%s/qt-x11-%s.tar.gz" % \
-                    (version.up_to(1), version)
+                (version.up_to(1), version)
         else:
             url += "%s/qt-%s.tar.gz" % \
-                    (version.up_to(1), version)
+                (version.up_to(1), version)
 
         return url
 
-
     def setup_environment(self, spack_env, env):
         env.set('QTDIR', self.prefix)
 
-
     def setup_dependent_environment(self, spack_env, run_env, dspec):
         spack_env.set('QTDIR', self.prefix)
 
-
     def patch(self):
         if self.spec.satisfies('@4'):
             qmake_conf      = 'mkspecs/common/g++-base.conf'
@@ -117,11 +116,14 @@ def patch(self):
             return
 
         # Fix qmake compilers in the default mkspec
-        filter_file(r'^QMAKE_COMPILER *=.*$',  'QMAKE_COMPILER = cc', qmake_conf)
-        filter_file(r'^QMAKE_CC *=.*$',        'QMAKE_CC = cc',       qmake_conf)
-        filter_file(r'^QMAKE_CXX *=.*$',       'QMAKE_CXX = c++',     qmake_conf)
-        filter_file(r'^QMAKE_LFLAGS_NOUNDEF *\+?=.*$',  'QMAKE_LFLAGS_NOUNDEF =', qmake_unix_conf)
-
+        filter_file(r'^QMAKE_COMPILER *=.*$',
+                    'QMAKE_COMPILER = cc', qmake_conf)
+        filter_file(r'^QMAKE_CC *=.*$',
+                    'QMAKE_CC = cc',       qmake_conf)
+        filter_file(r'^QMAKE_CXX *=.*$',
+                    'QMAKE_CXX = c++',     qmake_conf)
+        filter_file(r'^QMAKE_LFLAGS_NOUNDEF *\+?=.*$',
+                    'QMAKE_LFLAGS_NOUNDEF =', qmake_unix_conf)
 
     @property
     def common_config_args(self):
@@ -155,7 +157,7 @@ def common_config_args(self):
     @when('@3')
     def configure(self):
         # An user report that this was necessary to link Qt3 on ubuntu
-        os.environ['LD_LIBRARY_PATH'] = os.getcwd()+'/lib' 
+        os.environ['LD_LIBRARY_PATH'] = os.getcwd() + '/lib'
         configure('-prefix', self.prefix,
                   '-v',
                   '-thread',
@@ -169,17 +171,16 @@ def configure(self):
                   '-no-webkit',
                   *self.common_config_args)
 
-
     @when('@5')
     def configure(self):
         configure('-no-eglfs',
                   '-no-directfb',
                   '-qt-xcb',
-                  # If someone wants to get a webkit build working, be my guest!
+                  # If someone wants to get a webkit build working, be my
+                  # guest!
                   '-skip', 'qtwebkit',
                   *self.common_config_args)
 
-
     def install(self, spec, prefix):
         self.configure()
         make()
diff --git a/var/spack/repos/builtin/packages/qthreads/package.py b/var/spack/repos/builtin/packages/qthreads/package.py
index 47b5706063..2eaff0a240 100644
--- a/var/spack/repos/builtin/packages/qthreads/package.py
+++ b/var/spack/repos/builtin/packages/qthreads/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Qthreads(Package):
     """The qthreads API is designed to make using large numbers of
        threads convenient and easy, and to allow portable access to
diff --git a/var/spack/repos/builtin/packages/raja/package.py b/var/spack/repos/builtin/packages/raja/package.py
index b6300a1dfa..e9db4b4fc8 100644
--- a/var/spack/repos/builtin/packages/raja/package.py
+++ b/var/spack/repos/builtin/packages/raja/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Raja(Package):
     """RAJA Parallel Framework."""
     homepage = "http://software.llnl.gov/RAJA/"
@@ -31,6 +32,6 @@ class Raja(Package):
     version('git', git='https://github.com/LLNL/RAJA.git', branch="master")
 
     def install(self, spec, prefix):
-            cmake('.',*std_cmake_args)
-            make()
-            make('install')
+        cmake('.', *std_cmake_args)
+        make()
+        make('install')
diff --git a/var/spack/repos/builtin/packages/ravel/package.py b/var/spack/repos/builtin/packages/ravel/package.py
index 96692ac7c1..4f4f2b2e10 100644
--- a/var/spack/repos/builtin/packages/ravel/package.py
+++ b/var/spack/repos/builtin/packages/ravel/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Ravel(Package):
     """Ravel is a parallel communication trace visualization tool that
        orders events according to logical time."""
diff --git a/var/spack/repos/builtin/packages/readline/package.py b/var/spack/repos/builtin/packages/readline/package.py
index 039bf725eb..abb6ba04ce 100644
--- a/var/spack/repos/builtin/packages/readline/package.py
+++ b/var/spack/repos/builtin/packages/readline/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Readline(Package):
     """The GNU Readline library provides a set of functions for use by
        applications that allow users to edit command lines as they
diff --git a/var/spack/repos/builtin/packages/rose/package.py b/var/spack/repos/builtin/packages/rose/package.py
index bcd317eb8f..02b09f0126 100644
--- a/var/spack/repos/builtin/packages/rose/package.py
+++ b/var/spack/repos/builtin/packages/rose/package.py
@@ -22,12 +22,13 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-#------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 # Author: Justin Too <too1@llnl.gov>
-#------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 
 from spack import *
 
+
 class Rose(Package):
     """A compiler infrastructure to build source-to-source program
        transformation and analysis tools.
@@ -36,7 +37,8 @@ class Rose(Package):
     homepage = "http://rosecompiler.org/"
     url      = "https://github.com/rose-compiler/edg4x-rose"
 
-    version('master', branch='master', git='https://github.com/rose-compiler/edg4x-rose.git')
+    version('master', branch='master',
+            git='https://github.com/rose-compiler/edg4x-rose.git')
 
     patch('add_spack_compiler_recognition.patch')
 
@@ -60,4 +62,3 @@ def install(self, spec, prefix):
                       "--with-boost=" + boost.prefix,
                       "--disable-boost-version-check")
             make("install-core")
-
diff --git a/var/spack/repos/builtin/packages/rsync/package.py b/var/spack/repos/builtin/packages/rsync/package.py
index a9f8d4cfda..4e741b255f 100644
--- a/var/spack/repos/builtin/packages/rsync/package.py
+++ b/var/spack/repos/builtin/packages/rsync/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class Rsync(Package):
-    """rsync is an open source utility that provides fast incremental file transfer."""
+    """An open source utility that provides fast incremental file transfer."""
     homepage = "https://rsync.samba.org"
     url      = "https://download.samba.org/pub/rsync/rsync-3.1.1.tar.gz"
 
diff --git a/var/spack/repos/builtin/packages/rust/package.py b/var/spack/repos/builtin/packages/rust/package.py
index 65f81ce534..629dfb4649 100644
--- a/var/spack/repos/builtin/packages/rust/package.py
+++ b/var/spack/repos/builtin/packages/rust/package.py
@@ -6,6 +6,7 @@ def get_submodules():
     git = which('git')
     git('submodule', 'update', '--init', '--recursive')
 
+
 class Rust(Package):
     """The rust programming language toolchain"""
     homepage = "http://www.rust-lang.org"
diff --git a/var/spack/repos/builtin/packages/scalasca/package.py b/var/spack/repos/builtin/packages/scalasca/package.py
index 98e43ee75a..228d814aed 100644
--- a/var/spack/repos/builtin/packages/scalasca/package.py
+++ b/var/spack/repos/builtin/packages/scalasca/package.py
@@ -27,10 +27,12 @@
 
 
 class Scalasca(Package):
-    """
-    Scalasca is a software tool that supports the performance optimization of parallel programs by measuring and
-    analyzing their runtime behavior. The analysis identifies potential performance bottlenecks - in particular those
-    concerning communication and synchronization - and offers guidance in exploring their causes.
+    """Scalasca is a software tool that supports the performance optimization
+       of parallel programs by measuring and analyzing their runtime
+       behavior. The analysis identifies potential performance
+       bottlenecks - in particular those concerning communication and
+       synchronization - and offers guidance in exploring their causes.
+
     """
 
     homepage = "http://www.scalasca.org"
@@ -44,7 +46,8 @@ class Scalasca(Package):
 
     depends_on("mpi")
     ##########
-    # Hard-code dependencies for Scalasca according to what stated in the release page
+    # Hard-code dependencies for Scalasca according to what stated in the
+    # release page
     # The OTF2 library path should be detected automatically from SCOREP
     # SCALASCA 2.2.2
     depends_on("scorep@1.4:", when='@2.2.2')
@@ -60,4 +63,4 @@ def install(self, spec, prefix):
                           "--enable-shared"]
         configure(*configure_args)
         make()
-        make("install")
\ No newline at end of file
+        make("install")
diff --git a/var/spack/repos/builtin/packages/scons/package.py b/var/spack/repos/builtin/packages/scons/package.py
index 40ae4176dd..2c32bde4a1 100644
--- a/var/spack/repos/builtin/packages/scons/package.py
+++ b/var/spack/repos/builtin/packages/scons/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Scons(Package):
     """SCons is a software construction tool"""
     homepage = "http://scons.org"
diff --git a/var/spack/repos/builtin/packages/scotch/package.py b/var/spack/repos/builtin/packages/scotch/package.py
index c2bad20c2f..94a323ce90 100644
--- a/var/spack/repos/builtin/packages/scotch/package.py
+++ b/var/spack/repos/builtin/packages/scotch/package.py
@@ -39,11 +39,16 @@ class Scotch(Package):
     version('6.0.0', 'c50d6187462ba801f9a82133ee666e8e')
     version('5.1.10b', 'f587201d6cf5cf63527182fbfba70753')
 
-    variant('mpi', default=False, description='Activate the compilation of parallel libraries')
-    variant('compression', default=True, description='Activate the posibility to use compressed files')
-    variant('esmumps', default=False, description='Activate the compilation of esmumps needed by mumps')
-    variant('shared', default=True, description='Build a shared version of the library')
-    variant('metis', default=True, description='Build metis and parmetis wrapper libraries')
+    variant('mpi', default=False,
+            description='Activate the compilation of parallel libraries')
+    variant('compression', default=True,
+            description='Activate the posibility to use compressed files')
+    variant('esmumps', default=False,
+            description='Activate the compilation of esmumps needed by mumps')
+    variant('shared', default=True,
+            description='Build a shared version of the library')
+    variant('metis', default=True,
+            description='Build metis and parmetis wrapper libraries')
 
     depends_on('flex', type='build')
     depends_on('bison', type='build')
diff --git a/var/spack/repos/builtin/packages/scr/package.py b/var/spack/repos/builtin/packages/scr/package.py
index b638688e7b..2b01c60b3e 100644
--- a/var/spack/repos/builtin/packages/scr/package.py
+++ b/var/spack/repos/builtin/packages/scr/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Scr(Package):
     """SCR caches checkpoint data in storage on the compute nodes of a
        Linux cluster to provide a fast, scalable checkpoint/restart
@@ -34,8 +35,10 @@ class Scr(Package):
     depends_on("mpi")
 #    depends_on("dtcmp")
 
-    version('1.1-7', 'a5930e9ab27d1b7049447c2fd7734ebd', url='http://downloads.sourceforge.net/project/scalablecr/releases/scr-1.1-7.tar.gz')
-    version('1.1.8', '6a0f11ad18e27fcfc00a271ff587b06e', url='https://github.com/hpc/scr/releases/download/v1.1.8/scr-1.1.8.tar.gz')
+    version('1.1-7', 'a5930e9ab27d1b7049447c2fd7734ebd',
+            url='http://downloads.sourceforge.net/project/scalablecr/releases/scr-1.1-7.tar.gz')
+    version('1.1.8', '6a0f11ad18e27fcfc00a271ff587b06e',
+            url='https://github.com/hpc/scr/releases/download/v1.1.8/scr-1.1.8.tar.gz')
 
     def install(self, spec, prefix):
         configure("--prefix=" + prefix,
diff --git a/var/spack/repos/builtin/packages/silo/package.py b/var/spack/repos/builtin/packages/silo/package.py
index 017a09977a..5113c88bdf 100644
--- a/var/spack/repos/builtin/packages/silo/package.py
+++ b/var/spack/repos/builtin/packages/silo/package.py
@@ -38,7 +38,8 @@ class Silo(Package):
 
     variant('fortran', default=True, description='Enable Fortran support')
     variant('shared', default=True, description='Build shared libraries')
-    variant('silex', default=False, description='Builds Silex, a GUI for viewing Silo files')
+    variant('silex', default=False,
+            description='Builds Silex, a GUI for viewing Silo files')
 
     depends_on('hdf5')
     depends_on('qt', when='+silex')
@@ -55,8 +56,10 @@ def install(self, spec, prefix):
 
         configure(
             '--prefix=%s' % prefix,
-            '--with-hdf5=%s,%s' % (spec['hdf5'].prefix.include, spec['hdf5'].prefix.lib),
-            '--with-zlib=%s,%s' % (spec['zlib'].prefix.include, spec['zlib'].prefix.lib),
+            '--with-hdf5=%s,%s' % (spec['hdf5'].prefix.include,
+                                   spec['hdf5'].prefix.lib),
+            '--with-zlib=%s,%s' % (spec['zlib'].prefix.include,
+                                   spec['zlib'].prefix.lib),
             '--enable-install-lite-headers',
             *config_args)
 
diff --git a/var/spack/repos/builtin/packages/snappy/package.py b/var/spack/repos/builtin/packages/snappy/package.py
index 836063f933..1e94980c92 100644
--- a/var/spack/repos/builtin/packages/snappy/package.py
+++ b/var/spack/repos/builtin/packages/snappy/package.py
@@ -22,9 +22,9 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import os
 from spack import *
 
+
 class Snappy(Package):
     """A fast compressor/decompressor: https://code.google.com/p/snappy"""
 
diff --git a/var/spack/repos/builtin/packages/sparsehash/package.py b/var/spack/repos/builtin/packages/sparsehash/package.py
index a72a5ce105..e5abd42ae6 100644
--- a/var/spack/repos/builtin/packages/sparsehash/package.py
+++ b/var/spack/repos/builtin/packages/sparsehash/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Sparsehash(Package):
     """Sparse and dense hash-tables for C++ by Google"""
     homepage = "https://github.com/sparsehash/sparsehash"
diff --git a/var/spack/repos/builtin/packages/spindle/package.py b/var/spack/repos/builtin/packages/spindle/package.py
index bcdc7543a3..213d41e970 100644
--- a/var/spack/repos/builtin/packages/spindle/package.py
+++ b/var/spack/repos/builtin/packages/spindle/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Spindle(Package):
     """Spindle improves the library-loading performance of dynamically
        linked HPC applications.  Without Spindle large MPI jobs can
diff --git a/var/spack/repos/builtin/packages/spot/package.py b/var/spack/repos/builtin/packages/spot/package.py
index 21bb6f03a7..096aa24c02 100644
--- a/var/spack/repos/builtin/packages/spot/package.py
+++ b/var/spack/repos/builtin/packages/spot/package.py
@@ -23,16 +23,17 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class Spot(Package):
-    """Spot is a C++11 library for omega-automata manipulation and model checking."""
+    """Spot is a C++11 library for omega-automata manipulation and model
+       checking."""
     homepage = "https://spot.lrde.epita.fr/index.html"
     url      = "http://www.lrde.epita.fr/dload/spot/spot-1.99.3.tar.gz"
 
     version('1.99.3', 'd53adcb2d0fe7c69f45d4e595a58254e')
 
-    #depends_on("gcc@4.8:", type='build')
+    # depends_on("gcc@4.8:", type='build')
     depends_on("python@3.2:")
 
     def install(self, spec, prefix):
diff --git a/var/spack/repos/builtin/packages/sqlite/package.py b/var/spack/repos/builtin/packages/sqlite/package.py
index 5e7ae4fb8b..513f8ec6d4 100644
--- a/var/spack/repos/builtin/packages/sqlite/package.py
+++ b/var/spack/repos/builtin/packages/sqlite/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Sqlite(Package):
     """SQLite3 is an SQL database engine in a C library. Programs that
        link the SQLite3 library can have SQL database access without
diff --git a/var/spack/repos/builtin/packages/stat/package.py b/var/spack/repos/builtin/packages/stat/package.py
index a03713397b..ec2fae5e9b 100644
--- a/var/spack/repos/builtin/packages/stat/package.py
+++ b/var/spack/repos/builtin/packages/stat/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Stat(Package):
     """Library to create, manipulate, and export graphs Graphlib."""
     homepage = "http://paradyn.org/STAT/STAT.html"
@@ -49,13 +50,14 @@ def install(self, spec, prefix):
         configure_args = [
             "--enable-gui",
             "--prefix=%s" % prefix,
-            "--disable-examples", # Examples require MPI: avoid this dependency.
+            # Examples require MPI: avoid this dependency.
+            "--disable-examples",
             "--with-launchmon=%s"   % spec['launchmon'].prefix,
             "--with-mrnet=%s"       % spec['mrnet'].prefix,
             "--with-graphlib=%s"    % spec['graphlib'].prefix,
             "--with-stackwalker=%s" % spec['dyninst'].prefix,
             "--with-libdwarf=%s"    % spec['libdwarf'].prefix
-            ]
+        ]
         if '+dysect' in spec:
             configure_args.append('--enable-dysectapi')
         configure(*configure_args)
diff --git a/var/spack/repos/builtin/packages/subversion/package.py b/var/spack/repos/builtin/packages/subversion/package.py
index 68ee397857..26d143e4aa 100644
--- a/var/spack/repos/builtin/packages/subversion/package.py
+++ b/var/spack/repos/builtin/packages/subversion/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-#import os
+
 
 class Subversion(Package):
     """Apache Subversion - an open source version control system."""
@@ -41,39 +41,40 @@ class Subversion(Package):
 
     # Optional: We need swig if we want the Perl, Python or Ruby
     # bindings.
-    #depends_on('swig')
-    #depends_on('python')
-    #depends_on('perl')
-    #depends_on('ruby')
+    # depends_on('swig')
+    # depends_on('python')
+    # depends_on('perl')
+    # depends_on('ruby')
 
     def install(self, spec, prefix):
 
         # configure, build, install:
-        # Ref: http://www.linuxfromscratch.org/blfs/view/svn/general/subversion.html
+        # Ref:
+        # http://www.linuxfromscratch.org/blfs/view/svn/general/subversion.html
         options = ['--prefix=%s' % prefix]
         options.append('--with-apr=%s' % spec['apr'].prefix)
         options.append('--with-apr-util=%s' % spec['apr-util'].prefix)
         options.append('--with-zlib=%s' % spec['zlib'].prefix)
         options.append('--with-sqlite=%s' % spec['sqlite'].prefix)
         options.append('--with-serf=%s' % spec['serf'].prefix)
-        #options.append('--with-swig=%s' % spec['swig'].prefix)
+        # options.append('--with-swig=%s' % spec['swig'].prefix)
 
         configure(*options)
         make()
         make('install')
 
         # python bindings
-        #make('swig-py',
+        # make('swig-py',
         #     'swig-pydir=/usr/lib/python2.7/site-packages/libsvn',
         #     'swig_pydir_extra=/usr/lib/python2.7/site-packages/svn')
-        #make('install-swig-py',
+        # make('install-swig-py',
         #     'swig-pydir=/usr/lib/python2.7/site-packages/libsvn',
         #     'swig_pydir_extra=/usr/lib/python2.7/site-packages/svn')
 
         # perl bindings
-        #make('swig-pl')
-        #make('install-swig-pl')
+        # make('swig-pl')
+        # make('install-swig-pl')
 
         # ruby bindings
-        #make('swig-rb')
-        #make('isntall-swig-rb')
+        # make('swig-rb')
+        # make('isntall-swig-rb')
diff --git a/var/spack/repos/builtin/packages/sundials/package.py b/var/spack/repos/builtin/packages/sundials/package.py
index e52b90eb8a..7582954ab1 100644
--- a/var/spack/repos/builtin/packages/sundials/package.py
+++ b/var/spack/repos/builtin/packages/sundials/package.py
@@ -36,11 +36,15 @@ class Sundials(Package):
     version('2.6.2', '3deeb0ede9f514184c6bd83ecab77d95')
 
     variant('mpi',     default=True,  description='Enable MPI support')
-    variant('lapack',  default=True,  description='Build with external BLAS/LAPACK libraries')
-    variant('klu',     default=False, description='Build with SuiteSparse KLU libraries')
-    variant('superlu', default=False, description='Build with SuperLU_MT libraries')
+    variant('lapack',  default=True,
+            description='Build with external BLAS/LAPACK libraries')
+    variant('klu',     default=False,
+            description='Build with SuiteSparse KLU libraries')
+    variant('superlu', default=False,
+            description='Build with SuperLU_MT libraries')
     variant('openmp',  default=False, description='Enable OpenMP support')
-    variant('pthread', default=True,  description='Enable POSIX threads support')
+    variant('pthread', default=True,
+            description='Enable POSIX threads support')
 
     depends_on('cmake', type='build')
     depends_on('mpi',                when='+mpi')
diff --git a/var/spack/repos/builtin/packages/superlu-mt/package.py b/var/spack/repos/builtin/packages/superlu-mt/package.py
index 5a9429d6e5..e849273e08 100644
--- a/var/spack/repos/builtin/packages/superlu-mt/package.py
+++ b/var/spack/repos/builtin/packages/superlu-mt/package.py
@@ -37,11 +37,13 @@ class SuperluMt(Package):
 
     version('3.1', '06ac62f1b4b7d17123fffa0d0c315e91')
 
-    variant('blas',    default=True,  description='Build with external BLAS library')
+    variant('blas',    default=True,
+            description='Build with external BLAS library')
 
     # Must choose one or the other
     variant('openmp',  default=False, description='Build with OpenMP support')
-    variant('pthread', default=True,  description='Build with POSIX threads support')
+    variant('pthread', default=True,
+            description='Build with POSIX threads support')
 
     # NOTE: must link with a single-threaded BLAS library
     depends_on('blas', when='+blas')
diff --git a/var/spack/repos/builtin/packages/swiftsim/package.py b/var/spack/repos/builtin/packages/swiftsim/package.py
index 620d658a10..636aa26bd2 100644
--- a/var/spack/repos/builtin/packages/swiftsim/package.py
+++ b/var/spack/repos/builtin/packages/swiftsim/package.py
@@ -38,9 +38,11 @@ class Swiftsim(Package):
     homepage = 'http://icc.dur.ac.uk/swift/'
     url = 'http://gitlab.cosma.dur.ac.uk/swift/swiftsim/repository/archive.tar.gz?ref=v0.3.0'
 
-    version('0.3.0', git='https://gitlab.cosma.dur.ac.uk/swift/swiftsim.git', commit='254cc1b563b2f88ddcf437b1f71da123bb9db733')
+    version('0.3.0', git='https://gitlab.cosma.dur.ac.uk/swift/swiftsim.git',
+            commit='254cc1b563b2f88ddcf437b1f71da123bb9db733')
 
-    variant('mpi', default=True, description='Enable distributed memory parallelism')
+    variant('mpi', default=True,
+            description='Enable distributed memory parallelism')
 
     # Build dependencies
     depends_on('autoconf', type='build')
diff --git a/var/spack/repos/builtin/packages/szip/package.py b/var/spack/repos/builtin/packages/szip/package.py
index fd3a2a209d..b2ca6f3995 100644
--- a/var/spack/repos/builtin/packages/szip/package.py
+++ b/var/spack/repos/builtin/packages/szip/package.py
@@ -24,10 +24,13 @@
 ##############################################################################
 from spack import *
 
+
 class Szip(Package):
-    """Szip is an implementation of the extended-Rice lossless compression algorithm.
-    It provides lossless compression of scientific data, and is provided with HDF
-    software products."""
+    """An implementation of the extended-Rice lossless compression algorithm.
+    It provides lossless compression of scientific data, and is provided
+    with HDF software products.
+
+    """
 
     homepage = "https://www.hdfgroup.org/doc_resource/SZIP/"
     url      = "http://www.hdfgroup.org/ftp/lib-external/szip/2.1/src/szip-2.1.tar.gz"
diff --git a/var/spack/repos/builtin/packages/tar/package.py b/var/spack/repos/builtin/packages/tar/package.py
index 4dce0e5be1..7a72278b9a 100644
--- a/var/spack/repos/builtin/packages/tar/package.py
+++ b/var/spack/repos/builtin/packages/tar/package.py
@@ -23,8 +23,6 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import sys
-import os
 
 
 class Tar(Package):
diff --git a/var/spack/repos/builtin/packages/task/package.py b/var/spack/repos/builtin/packages/task/package.py
index 8c3b412f48..785023fd03 100644
--- a/var/spack/repos/builtin/packages/task/package.py
+++ b/var/spack/repos/builtin/packages/task/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Task(Package):
     """Feature-rich console based todo list manager"""
     homepage = "http://www.taskwarrior.org"
diff --git a/var/spack/repos/builtin/packages/taskd/package.py b/var/spack/repos/builtin/packages/taskd/package.py
index 1d7f9ed49e..d13f480374 100644
--- a/var/spack/repos/builtin/packages/taskd/package.py
+++ b/var/spack/repos/builtin/packages/taskd/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Taskd(Package):
     """TaskWarrior task synchronization daemon"""
     # FIXME: add a proper url for your package's homepage here.
diff --git a/var/spack/repos/builtin/packages/tau/package.py b/var/spack/repos/builtin/packages/tau/package.py
index 3b181f3fa4..a77df8d37c 100644
--- a/var/spack/repos/builtin/packages/tau/package.py
+++ b/var/spack/repos/builtin/packages/tau/package.py
@@ -30,6 +30,7 @@
 
 from llnl.util.filesystem import join_path
 
+
 class Tau(Package):
     """
     A portable profiling and tracing toolkit for performance
@@ -45,15 +46,20 @@ class Tau(Package):
     version('2.23.1', '6593b47ae1e7a838e632652f0426fe72')
 
     # TODO : shmem variant missing
-    variant('download', default=False, description='Downloads and builds various dependencies')
+    variant('download', default=False,
+            description='Downloads and builds various dependencies')
     variant('scorep', default=False, description='Activates SCOREP support')
     variant('openmp', default=True, description='Use OpenMP threads')
-    variant('mpi', default=True, description='Specify use of TAU MPI wrapper library')
+    variant('mpi', default=True,
+            description='Specify use of TAU MPI wrapper library')
     variant('phase', default=True, description='Generate phase based profiles')
-    variant('comm', default=True, description=' Generate profiles with MPI communicator info')
+    variant('comm', default=True,
+            description=' Generate profiles with MPI communicator info')
 
-    # TODO : Try to build direct OTF2 support? Some parts of the OTF support library in TAU are non-conformant,
-    # TODO : and fail at compile-time. Further, SCOREP is compiled with OTF2 support.
+    # TODO : Try to build direct OTF2 support? Some parts of the OTF support
+    # TODO : library in TAU are non-conformant,
+    # TODO : and fail at compile-time. Further, SCOREP is compiled with OTF2
+    # support.
     depends_on('pdt')  # Required for TAU instrumentation
     depends_on('scorep', when='+scorep')
     depends_on('binutils', when='~download')
@@ -65,13 +71,17 @@ def set_compiler_options(self):
 
         ##########
         # Selecting a compiler with TAU configure is quite tricky:
-        # 1 - compilers are mapped to a given set of strings (and spack cc, cxx, etc. wrappers are not among them)
+        # 1 - compilers are mapped to a given set of strings
+        #     (and spack cc, cxx, etc. wrappers are not among them)
         # 2 - absolute paths are not allowed
-        # 3 - the usual environment variables seems not to be checked ('CC', 'CXX' and 'FC')
-        # 4 - if no -cc=<compiler> -cxx=<compiler> is passed tau is built with system compiler silently
+        # 3 - the usual environment variables seems not to be checked
+        #     ('CC', 'CXX' and 'FC')
+        # 4 - if no -cc=<compiler> -cxx=<compiler> is passed tau is built with
+        #     system compiler silently
         # (regardless of what %<compiler> is used in the spec)
         #
-        # In the following we give TAU what he expects and put compilers into PATH
+        # In the following we give TAU what he expects and put compilers into
+        # PATH
         compiler_path = os.path.dirname(self.compiler.cc)
         os.environ['PATH'] = ':'.join([compiler_path, os.environ['PATH']])
         compiler_options = ['-c++=%s' % self.compiler.cxx_names[0],
@@ -80,7 +90,8 @@ def set_compiler_options(self):
             compiler_options.append('-fortran=%s' % self.compiler.fc_names[0])
         ##########
 
-        # Construct the string of custom compiler flags and append it to compiler related options
+        # Construct the string of custom compiler flags and append it to
+        # compiler related options
         useropt = ' '.join(useropt)
         useropt = "-useropt=%s" % useropt
         compiler_options.append(useropt)
@@ -92,8 +103,9 @@ def install(self, spec, prefix):
         change_sed_delimiter('@', ';', 'utils/FixMakefile')
         change_sed_delimiter('@', ';', 'utils/FixMakefile.sed.default')
 
-        # TAU configure, despite the name , seems to be a manually written script (nothing related to autotools).
-        # As such it has a few #peculiarities# that make this build quite hackish.
+        # TAU configure, despite the name , seems to be a manually
+        # written script (nothing related to autotools).  As such it has
+        # a few #peculiarities# that make this build quite hackish.
         options = ["-prefix=%s" % prefix,
                    "-iowrapper",
                    "-pdt=%s" % spec['pdt'].prefix]
diff --git a/var/spack/repos/builtin/packages/tetgen/package.py b/var/spack/repos/builtin/packages/tetgen/package.py
index 97aa68be65..7ac55a6785 100644
--- a/var/spack/repos/builtin/packages/tetgen/package.py
+++ b/var/spack/repos/builtin/packages/tetgen/package.py
@@ -36,7 +36,8 @@ class Tetgen(Package):
     url      = "http://www.tetgen.org/files/tetgen1.4.3.tar.gz"
 
     version('1.4.3', 'd6a4bcdde2ac804f7ec66c29dcb63c18')
-    version('1.5.0', '3b9fd9cdec121e52527b0308f7aad5c1', url='http://www.tetgen.org/1.5/src/tetgen1.5.0.tar.gz')
+    version('1.5.0', '3b9fd9cdec121e52527b0308f7aad5c1',
+            url='http://www.tetgen.org/1.5/src/tetgen1.5.0.tar.gz')
 
     depends_on('cmake@2.8.7:', when='@1.5.0:', type='build')
 
diff --git a/var/spack/repos/builtin/packages/texinfo/package.py b/var/spack/repos/builtin/packages/texinfo/package.py
index 5c6fef0db6..ddb23e5d6f 100644
--- a/var/spack/repos/builtin/packages/texinfo/package.py
+++ b/var/spack/repos/builtin/packages/texinfo/package.py
@@ -27,10 +27,13 @@
 
 
 class Texinfo(Package):
-    """
-    Texinfo is the official documentation format of the GNU project. It was invented by Richard Stallman and Bob
-    Chassell many years ago, loosely based on Brian Reid's Scribe and other formatting languages of the time. It is
-    used by many non-GNU projects as well.FIXME: put a proper description of your package here.
+    """Texinfo is the official documentation format of the GNU project.
+
+    It was invented by Richard Stallman and Bob Chassell many years ago,
+    loosely based on Brian Reid's Scribe and other formatting languages
+    of the time. It is used by many non-GNU projects as well.FIXME: put a
+    proper description of your package here.
+
     """
     homepage = "https://www.gnu.org/software/texinfo/"
     url      = "http://ftp.gnu.org/gnu/texinfo/texinfo-6.0.tar.gz"
diff --git a/var/spack/repos/builtin/packages/texlive/package.py b/var/spack/repos/builtin/packages/texlive/package.py
index d44a6e311e..64158e74cb 100644
--- a/var/spack/repos/builtin/packages/texlive/package.py
+++ b/var/spack/repos/builtin/packages/texlive/package.py
@@ -32,7 +32,8 @@ class Texlive(Package):
 
     homepage = "http://www.tug.org/texlive"
 
-    version('live', 'e671eea7f142c438959493cc42a2a59b', url="http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz")
+    version('live', 'e671eea7f142c438959493cc42a2a59b',
+            url="http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz")
 
     # There does not seem to be a complete list of schemes.
     # Examples include:
diff --git a/var/spack/repos/builtin/packages/thrift/package.py b/var/spack/repos/builtin/packages/thrift/package.py
index 025ee2b885..755f7a80b9 100644
--- a/var/spack/repos/builtin/packages/thrift/package.py
+++ b/var/spack/repos/builtin/packages/thrift/package.py
@@ -24,12 +24,16 @@
 ##############################################################################
 from spack import *
 
+
 class Thrift(Package):
-    """The Apache Thrift software framework, for scalable cross-language services
-    development, combines a software stack with a code generation engine to build
-    services that work efficiently and seamlessly between C++, Java, Python, PHP,
-    Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, OCaml
-     and Delphi and other languages."""
+    """Software framework for scalable cross-language services development.
+
+    Thrift combines a software stack with a code generation engine to
+    build services that work efficiently and seamlessly between C++,
+    Java, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa,
+    JavaScript, Node.js, Smalltalk, OCaml and Delphi and other languages.
+
+    """
 
     homepage = "http://thrift.apache.org"
     url      = "http://apache.mirrors.ionfish.org/thrift/0.9.2/thrift-0.9.2.tar.gz"
@@ -37,8 +41,10 @@ class Thrift(Package):
     version('0.9.2', '89f63cc4d0100912f4a1f8a9dee63678')
 
     # Currently only support for c-family and python
-    variant('c', default=True, description="Build support for C-family languages")
-    variant('python', default=True, description="Build support for python")
+    variant('c', default=True,
+            description="Build support for C-family languages")
+    variant('python', default=True,
+            description="Build support for python")
 
     depends_on('jdk')
     depends_on('autoconf', type='build')
@@ -66,7 +72,8 @@ def install(self, spec, prefix):
         options.append('--enable-tests=no')
 
         options.append('--with-c=%s' % ('yes' if '+c' in spec else 'no'))
-        options.append('--with-python=%s' % ('yes' if '+python' in spec else 'no'))
+        options.append('--with-python=%s' %
+                       ('yes' if '+python' in spec else 'no'))
         options.append('--with-java=%s' % ('yes' if '+java' in spec else 'no'))
         options.append('--with-go=%s' % ('yes' if '+go' in spec else 'no'))
         options.append('--with-lua=%s' % ('yes' if '+lua' in spec else 'no'))
diff --git a/var/spack/repos/builtin/packages/tmuxinator/package.py b/var/spack/repos/builtin/packages/tmuxinator/package.py
index b9c92ea4db..66da4006f2 100644
--- a/var/spack/repos/builtin/packages/tmuxinator/package.py
+++ b/var/spack/repos/builtin/packages/tmuxinator/package.py
@@ -24,17 +24,18 @@
 ##############################################################################
 from spack import *
 
+
 class Tmuxinator(Package):
     """A session configuration creator and manager for tmux"""
     homepage = "https://github.com/tmuxinator/tmuxinator"
     url      = "https://github.com/tmuxinator/tmuxinator"
 
     version('0.6.11',
-        git='https://github.com/tmuxinator/tmuxinator',
-        tag='v0.6.11')
+            git='https://github.com/tmuxinator/tmuxinator',
+            tag='v0.6.11')
 
     extends('ruby')
 
     def install(self, spec, prefix):
-      gem('build', 'tmuxinator.gemspec')
-      gem('install', 'tmuxinator-{0}.gem'.format(self.version))
+        gem('build', 'tmuxinator.gemspec')
+        gem('install', 'tmuxinator-{0}.gem'.format(self.version))
diff --git a/var/spack/repos/builtin/packages/triangle/package.py b/var/spack/repos/builtin/packages/triangle/package.py
index bc8b0ec639..f4ee9ca1c9 100644
--- a/var/spack/repos/builtin/packages/triangle/package.py
+++ b/var/spack/repos/builtin/packages/triangle/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Triangle(Package):
     """Triangle is a two-dimensional mesh generator and Delaunay
        triangulator. Triangle generates exact Delaunay triangulations,
diff --git a/var/spack/repos/builtin/packages/trilinos/package.py b/var/spack/repos/builtin/packages/trilinos/package.py
index 1d83e055c9..d39e45f054 100644
--- a/var/spack/repos/builtin/packages/trilinos/package.py
+++ b/var/spack/repos/builtin/packages/trilinos/package.py
@@ -56,17 +56,24 @@ class Trilinos(Package):
     version('11.14.2', 'a43590cf896c677890d75bfe75bc6254')
     version('11.14.1', '40febc57f76668be8b6a77b7607bb67f')
 
-    variant('metis',        default=True,  description='Compile with METIS and ParMETIS')
-    variant('mumps',        default=True,  description='Compile with support for MUMPS solvers')
-    variant('superlu-dist', default=True,  description='Compile with SuperluDist solvers')
-    variant('hypre',        default=True,  description='Compile with Hypre preconditioner')
+    variant('metis',        default=True,
+            description='Compile with METIS and ParMETIS')
+    variant('mumps',        default=True,
+            description='Compile with support for MUMPS solvers')
+    variant('superlu-dist', default=True,
+            description='Compile with SuperluDist solvers')
+    variant('hypre',        default=True,
+            description='Compile with Hypre preconditioner')
     variant('hdf5',         default=True,  description='Compile with HDF5')
-    variant('suite-sparse', default=True,  description='Compile with SuiteSparse solvers')
+    variant('suite-sparse', default=True,
+            description='Compile with SuiteSparse solvers')
     # not everyone has py-numpy activated, keep it disabled by default to avoid
     # configure errors
     variant('python',       default=False, description='Build python wrappers')
-    variant('shared',       default=True,  description='Enables the build of shared libraries')
-    variant('debug',        default=False, description='Builds a debug version of the libraries')
+    variant('shared',       default=True,
+            description='Enables the build of shared libraries')
+    variant('debug',        default=False,
+            description='Builds a debug version of the libraries')
     variant('boost',        default=True, description='Compile with Boost')
 
     depends_on('cmake', type='build')
diff --git a/var/spack/repos/builtin/packages/udunits2/package.py b/var/spack/repos/builtin/packages/udunits2/package.py
index aed39668fd..bae6414c5b 100644
--- a/var/spack/repos/builtin/packages/udunits2/package.py
+++ b/var/spack/repos/builtin/packages/udunits2/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Udunits2(Package):
     """Automated units conversion"""
 
diff --git a/var/spack/repos/builtin/packages/uncrustify/package.py b/var/spack/repos/builtin/packages/uncrustify/package.py
index db96bc301e..c3182d0dc8 100644
--- a/var/spack/repos/builtin/packages/uncrustify/package.py
+++ b/var/spack/repos/builtin/packages/uncrustify/package.py
@@ -24,8 +24,9 @@
 ##############################################################################
 from spack import *
 
+
 class Uncrustify(Package):
-    """Source Code Beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA"""
+    """Source Code Beautifier for C, C++, C#, ObjectiveC, Java, and others."""
 
     homepage = "http://uncrustify.sourceforge.net/"
     url      = "http://downloads.sourceforge.net/project/uncrustify/uncrustify/uncrustify-0.61/uncrustify-0.61.tar.gz"
diff --git a/var/spack/repos/builtin/packages/unibilium/package.py b/var/spack/repos/builtin/packages/unibilium/package.py
index d9e0ad6bcb..943e4737e1 100644
--- a/var/spack/repos/builtin/packages/unibilium/package.py
+++ b/var/spack/repos/builtin/packages/unibilium/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Unibilium(Package):
     """A terminfo parsing library"""
     homepage = "https://github.com/mauke/unibilium"
@@ -32,5 +33,5 @@ class Unibilium(Package):
     version('1.2.0', '9b1c97839a880a373da6c097443b43c4')
 
     def install(self, spec, prefix):
-        make("PREFIX="+prefix)
-        make("install", "PREFIX="+prefix)
+        make("PREFIX=" + prefix)
+        make("install", "PREFIX=" + prefix)
diff --git a/var/spack/repos/builtin/packages/util-linux/package.py b/var/spack/repos/builtin/packages/util-linux/package.py
index bf6972683d..99af170ca1 100644
--- a/var/spack/repos/builtin/packages/util-linux/package.py
+++ b/var/spack/repos/builtin/packages/util-linux/package.py
@@ -23,7 +23,7 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-import os
+
 
 class UtilLinux(Package):
     """Util-linux is a suite of essential utilities for any Linux system."""
@@ -36,9 +36,9 @@ class UtilLinux(Package):
     depends_on("python@2.7:")
 
     def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix, 
-                "PKG_CONFIG_PATH=%s/pkgconfig" % spec['python'].prefix.lib,
-                "--disable-use-tty-group")
+        configure("--prefix=%s" % prefix,
+                  "PKG_CONFIG_PATH=%s/pkgconfig" % spec['python'].prefix.lib,
+                  "--disable-use-tty-group")
 
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/valgrind/package.py b/var/spack/repos/builtin/packages/valgrind/package.py
index afd4cc6ad0..e7ae227c27 100644
--- a/var/spack/repos/builtin/packages/valgrind/package.py
+++ b/var/spack/repos/builtin/packages/valgrind/package.py
@@ -27,12 +27,15 @@
 
 
 class Valgrind(Package):
-    """
-    Valgrind is an instrumentation framework for building dynamic analysis tools. There are Valgrind tools that can
-    automatically detect many memory management and threading bugs, and profile your programs in detail. You can also
-    use Valgrind to build new tools.
+    """An instrumentation framework for building dynamic analysis.
+
+    There are Valgrind tools that can automatically detect many memory
+    management and threading bugs, and profile your programs in
+    detail. You can also use Valgrind to build new tools.
+
+    Valgrind is Open Source / Free Software, and is freely available
+    under the GNU General Public License, version 2.
 
-    Valgrind is Open Source / Free Software, and is freely available under the GNU General Public License, version 2.
     """
     homepage = "http://valgrind.org/"
     url = "http://valgrind.org/downloads/valgrind-3.11.0.tar.bz2"
@@ -42,7 +45,8 @@ class Valgrind(Package):
     version('3.10.0', '7c311a72a20388aceced1aa5573ce970')
 
     variant('mpi', default=True, description='Activates MPI support for valgrind')
-    variant('boost', default=True, description='Activates boost support for valgrind')
+    variant('boost', default=True,
+            description='Activates boost support for valgrind')
 
     depends_on('mpi', when='+mpi')
     depends_on('boost', when='+boost')
diff --git a/var/spack/repos/builtin/packages/vim/package.py b/var/spack/repos/builtin/packages/vim/package.py
index e0dfb64879..01eccfab57 100644
--- a/var/spack/repos/builtin/packages/vim/package.py
+++ b/var/spack/repos/builtin/packages/vim/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Vim(Package):
     """Vim is a highly configurable text editor built to enable efficient text
     editing. It is an improved version of the vi editor distributed with most
@@ -51,7 +52,7 @@ class Vim(Package):
 
     feature_sets = ('huge', 'big', 'normal', 'small', 'tiny')
     for fs in feature_sets:
-      variant(fs, default=False, description="Use '%s' feature set" % fs)
+        variant(fs, default=False, description="Use '%s' feature set" % fs)
 
     variant('python', default=False, description="build with Python")
     depends_on('python', when='+python')
@@ -66,42 +67,44 @@ class Vim(Package):
     # virtual dependency?
 
     def install(self, spec, prefix):
-      feature_set = None
-      for fs in self.feature_sets:
-        if "+" + fs in spec:
-          if feature_set is not None:
-            tty.error("Only one feature set allowed, both %s and %s specified"
-                      % (feature_set, fs))
-          feature_set = fs
-      if '+gui' in spec:
-        if feature_set is not None:
-          if feature_set is not 'huge':
-            tty.error("+gui variant requires 'huge' feature set, %s was specified"
-                      % feature_set)
-        feature_set = 'huge'
-      if feature_set is None:
-        feature_set = 'normal'
+        feature_set = None
+        for fs in self.feature_sets:
+            if "+" + fs in spec:
+                if feature_set is not None:
+                    tty.error(
+                        "Only one feature set allowed, specified %s and %s"
+                        % (feature_set, fs))
+                feature_set = fs
+        if '+gui' in spec:
+            if feature_set is not None:
+                if feature_set is not 'huge':
+                    tty.error(
+                        "+gui variant requires 'huge' feature set, "
+                        "%s was specified" % feature_set)
+            feature_set = 'huge'
+        if feature_set is None:
+            feature_set = 'normal'
 
-      configure_args = []
-      configure_args.append("--with-features=" + feature_set)
+        configure_args = []
+        configure_args.append("--with-features=" + feature_set)
 
-      if '+python' in spec:
-        configure_args.append("--enable-pythoninterp=yes")
-      else:
-        configure_args.append("--enable-pythoninterp=dynamic")
+        if '+python' in spec:
+            configure_args.append("--enable-pythoninterp=yes")
+        else:
+            configure_args.append("--enable-pythoninterp=dynamic")
 
-      if '+ruby' in spec:
-        configure_args.append("--enable-rubyinterp=yes")
-      else:
-        configure_args.append("--enable-rubyinterp=dynamic")
+        if '+ruby' in spec:
+            configure_args.append("--enable-rubyinterp=yes")
+        else:
+            configure_args.append("--enable-rubyinterp=dynamic")
 
-      if '+gui' in spec:
-        configure_args.append("--enable-gui=auto")
+        if '+gui' in spec:
+            configure_args.append("--enable-gui=auto")
 
-      if '+cscope' in spec:
-        configure_args.append("--enable-cscope")
+        if '+cscope' in spec:
+            configure_args.append("--enable-cscope")
 
-      configure("--prefix=%s" % prefix, *configure_args)
+        configure("--prefix=%s" % prefix, *configure_args)
 
-      make()
-      make("install")
+        make()
+        make("install")
diff --git a/var/spack/repos/builtin/packages/visit/package.py b/var/spack/repos/builtin/packages/visit/package.py
index ae19fd0450..d88caeb00a 100644
--- a/var/spack/repos/builtin/packages/visit/package.py
+++ b/var/spack/repos/builtin/packages/visit/package.py
@@ -26,7 +26,8 @@
 
 
 class Visit(Package):
-    """VisIt is an Open Source, interactive, scalable, visualization, animation and analysis tool."""
+    """VisIt is an Open Source, interactive, scalable, visualization,
+       animation and analysis tool."""
     homepage = "https://wci.llnl.gov/simulation/computer-codes/visit/"
     url = "http://portal.nersc.gov/project/visit/releases/2.10.1/visit2.10.1.tar.gz"
 
@@ -42,12 +43,15 @@ def install(self, spec, prefix):
         with working_dir('spack-build', create=True):
 
             feature_args = std_cmake_args[:]
-            feature_args.extend(["-DVTK_MAJOR_VERSION=6",
-                                 "-DVTK_MINOR_VERSION=1",
-                                 "-DVISIT_LOC_QMAKE_EXE:FILEPATH=%s/qmake-qt4" % spec['qt'].prefix.bin,
-                                 "-DPYTHON_EXECUTABLE:FILEPATH=%s/python" % spec['python'].prefix.bin,
-                                 "-DVISIT_SILO_DIR:PATH=%s" % spec['silo'].prefix,
-                                 "-DVISIT_HDF5_DIR:PATH=%s" % spec['hdf5'].prefix])
+            feature_args.extend([
+                "-DVTK_MAJOR_VERSION=6",
+                "-DVTK_MINOR_VERSION=1",
+                "-DVISIT_LOC_QMAKE_EXE:FILEPATH=%s/qmake-qt4" % spec[
+                    'qt'].prefix.bin,
+                "-DPYTHON_EXECUTABLE:FILEPATH=%s/python" % spec[
+                    'python'].prefix.bin,
+                "-DVISIT_SILO_DIR:PATH=%s" % spec['silo'].prefix,
+                "-DVISIT_HDF5_DIR:PATH=%s" % spec['hdf5'].prefix])
 
             cmake('../src', *feature_args)
 
diff --git a/var/spack/repos/builtin/packages/vtk/package.py b/var/spack/repos/builtin/packages/vtk/package.py
index 5c196b5ea8..087c0e93eb 100644
--- a/var/spack/repos/builtin/packages/vtk/package.py
+++ b/var/spack/repos/builtin/packages/vtk/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Vtk(Package):
     """The Visualization Toolkit (VTK) is an open-source, freely
     available software system for 3D computer graphics, image
@@ -31,9 +32,11 @@ class Vtk(Package):
     homepage = "http://www.vtk.org"
     url      = "http://www.vtk.org/files/release/6.1/VTK-6.1.0.tar.gz"
 
-    version("7.0.0", "5fe35312db5fb2341139b8e4955c367d", url="http://www.vtk.org/files/release/7.0/VTK-7.0.0.tar.gz")
+    version("7.0.0", "5fe35312db5fb2341139b8e4955c367d",
+            url="http://www.vtk.org/files/release/7.0/VTK-7.0.0.tar.gz")
 
-    version("6.3.0", '0231ca4840408e9dd60af48b314c5b6d', url="http://www.vtk.org/files/release/6.3/VTK-6.3.0.tar.gz")
+    version("6.3.0", '0231ca4840408e9dd60af48b314c5b6d',
+            url="http://www.vtk.org/files/release/6.3/VTK-6.3.0.tar.gz")
 
     version('6.1.0', '25e4dfb3bad778722dcaec80cd5dab7d')
 
@@ -41,7 +44,8 @@ class Vtk(Package):
     depends_on("qt")
 
     # VTK7 defaults to OpenGL2 rendering backend
-    variant('opengl2', default=True, description='Build with OpenGL instead of OpenGL2 as rendering backend')
+    variant('opengl2', default=True,
+            description='Build with OpenGL instead of OpenGL2 backend')
 
     def install(self, spec, prefix):
         def feature_to_bool(feature, on='ON', off='OFF'):
@@ -67,7 +71,7 @@ def feature_to_bool(feature, on='ON', off='OFF'):
                 "-DVTK_Group_Qt=OFF",
                 "-DModule_vtkGUISupportQt:BOOL=ON",
                 "-DModule_vtkGUISupportQtOpenGL:BOOL=ON"
-                ])
+            ])
 
             if spec['qt'].satisfies('@5'):
                 cmake_args.append("-DVTK_QT_VERSION:STRING=5")
@@ -76,7 +80,8 @@ def feature_to_bool(feature, on='ON', off='OFF'):
                 cmake_args.append("-DCMAKE_C_FLAGS=-DGLX_GLXEXT_LEGACY")
                 cmake_args.append("-DCMAKE_CXX_FLAGS=-DGLX_GLXEXT_LEGACY")
 
-            cmake_args.append('-DVTK_RENDERING_BACKEND:STRING=%s' % feature_to_bool('+opengl2', 'OpenGL2', 'OpenGL'))
+            cmake_args.append('-DVTK_RENDERING_BACKEND:STRING=%s' %
+                              feature_to_bool('+opengl2', 'OpenGL2', 'OpenGL'))
 
             cmake(*cmake_args)
             make()
diff --git a/var/spack/repos/builtin/packages/wget/package.py b/var/spack/repos/builtin/packages/wget/package.py
index 532cf332e9..aff771b723 100644
--- a/var/spack/repos/builtin/packages/wget/package.py
+++ b/var/spack/repos/builtin/packages/wget/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Wget(Package):
     """GNU Wget is a free software package for retrieving files using
        HTTP, HTTPS and FTP, the most widely-used Internet protocols. It
@@ -40,9 +41,11 @@ class Wget(Package):
     depends_on("openssl")
 
     def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix,
-                  "--with-ssl=openssl",
-                  "OPENSSL_CFLAGS=-I%s" % spec['openssl'].prefix.include,
-                  "OPENSSL_LIBS=-L%s -lssl -lcrypto -lz" % spec['openssl'].prefix.lib)
+        configure(
+            "--prefix=%s" % prefix,
+            "--with-ssl=openssl",
+            "OPENSSL_CFLAGS=-I%s" % spec['openssl'].prefix.include,
+            "OPENSSL_LIBS=-L%s -lssl -lcrypto -lz" % spec[
+                'openssl'].prefix.lib)
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/wx/package.py b/var/spack/repos/builtin/packages/wx/package.py
index c000824803..5a80ca1c1f 100644
--- a/var/spack/repos/builtin/packages/wx/package.py
+++ b/var/spack/repos/builtin/packages/wx/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Wx(Package):
     """wxWidgets is a C++ library that lets developers create
        applications for Windows, Mac OS X, Linux and other platforms
@@ -43,8 +44,8 @@ class Wx(Package):
     depends_on('gtkplus')
 
     def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix, "--enable-unicode", "--disable-precomp-headers")
+        configure("--prefix=%s" % prefix, "--enable-unicode",
+                  "--disable-precomp-headers")
 
         make(parallel=False)
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/wxpropgrid/package.py b/var/spack/repos/builtin/packages/wxpropgrid/package.py
index 2283e1acf1..cc9ff445d6 100644
--- a/var/spack/repos/builtin/packages/wxpropgrid/package.py
+++ b/var/spack/repos/builtin/packages/wxpropgrid/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Wxpropgrid(Package):
     """wxPropertyGrid is a property sheet control for wxWidgets. In
        other words, it is a specialized two-column grid for editing
@@ -37,8 +38,8 @@ class Wxpropgrid(Package):
     depends_on("wx")
 
     def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix, "--with-wxdir=%s" % spec['wx'].prefix.bin, "--enable-unicode")
+        configure("--prefix=%s" % prefix, "--with-wxdir=%s" %
+                  spec['wx'].prefix.bin, "--enable-unicode")
 
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/xcb-proto/package.py b/var/spack/repos/builtin/packages/xcb-proto/package.py
index efcbdf0aea..587983f6bd 100644
--- a/var/spack/repos/builtin/packages/xcb-proto/package.py
+++ b/var/spack/repos/builtin/packages/xcb-proto/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class XcbProto(Package):
     """Protocol for libxcb"""
 
diff --git a/var/spack/repos/builtin/packages/xorg-util-macros/package.py b/var/spack/repos/builtin/packages/xorg-util-macros/package.py
index 963d93442f..cd50d46826 100644
--- a/var/spack/repos/builtin/packages/xorg-util-macros/package.py
+++ b/var/spack/repos/builtin/packages/xorg-util-macros/package.py
@@ -24,11 +24,12 @@
 ##############################################################################
 from spack import *
 
+
 class XorgUtilMacros(Package):
-    """The util-macros package contains the m4 macros used by all of the Xorg packages."""
+    """The m4 macros used by all of the Xorg packages."""
 
     homepage = "http://www.example.com"
-    url      = "http://ftp.x.org/pub/individual/util/util-macros-1.19.0.tar.bz2"
+    url = "http://ftp.x.org/pub/individual/util/util-macros-1.19.0.tar.bz2"
 
     version('1.19.0', '1cf984125e75f8204938d998a8b6c1e1')
 
diff --git a/var/spack/repos/builtin/packages/xproto/package.py b/var/spack/repos/builtin/packages/xproto/package.py
index 7be6defb83..dbceaa1575 100644
--- a/var/spack/repos/builtin/packages/xproto/package.py
+++ b/var/spack/repos/builtin/packages/xproto/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Xproto(Package):
     """The Xorg protocol headers provide the header files required to
        build the system, and to allow other applications to build against
diff --git a/var/spack/repos/builtin/packages/xz/package.py b/var/spack/repos/builtin/packages/xz/package.py
index b3ef7808aa..a8ab959a62 100644
--- a/var/spack/repos/builtin/packages/xz/package.py
+++ b/var/spack/repos/builtin/packages/xz/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Xz(Package):
     """XZ Utils is free general-purpose data compression software with
        high compression ratio. XZ Utils were written for POSIX-like
@@ -39,4 +40,3 @@ def install(self, spec, prefix):
         configure("--prefix=%s" % prefix)
         make()
         make("install")
-
diff --git a/var/spack/repos/builtin/packages/yasm/package.py b/var/spack/repos/builtin/packages/yasm/package.py
index e05160c8ea..f14bdbcee7 100644
--- a/var/spack/repos/builtin/packages/yasm/package.py
+++ b/var/spack/repos/builtin/packages/yasm/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Yasm(Package):
     """Yasm is a complete rewrite of the NASM-2.11.06 assembler. It
        supports the x86 and AMD64 instruction sets, accepts NASM and
diff --git a/var/spack/repos/builtin/packages/zeromq/package.py b/var/spack/repos/builtin/packages/zeromq/package.py
index 9bdd5861e0..6a657dc39c 100644
--- a/var/spack/repos/builtin/packages/zeromq/package.py
+++ b/var/spack/repos/builtin/packages/zeromq/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Zeromq(Package):
     """ The ZMQ networking/concurrency library and core API """
     homepage = "http://zguide.zeromq.org/"
@@ -38,7 +39,7 @@ class Zeromq(Package):
     depends_on("libsodium")
 
     def install(self, spec, prefix):
-        configure("--with-libsodium","--prefix=%s" % prefix)
+        configure("--with-libsodium", "--prefix=%s" % prefix)
 
         make()
         make("install")
diff --git a/var/spack/repos/builtin/packages/zfp/package.py b/var/spack/repos/builtin/packages/zfp/package.py
index 878b65118f..a898ab03d3 100644
--- a/var/spack/repos/builtin/packages/zfp/package.py
+++ b/var/spack/repos/builtin/packages/zfp/package.py
@@ -24,12 +24,15 @@
 ##############################################################################
 from spack import *
 
+
 class Zfp(Package):
-    """zfp is an open source C library for compressed floating-point arrays that supports
-       very high throughput read and write random acces, target error bounds or bit rates.
-       Although bit-for-bit lossless compression is not always possible, zfp is usually
-       accurate to within machine epsilon in near-lossless mode, and is often orders of
-       magnitude more accurate than other lossy compressors.
+    """zfp is an open source C library for compressed floating-point arrays
+       that supports very high throughput read and write random acces,
+       target error bounds or bit rates.  Although bit-for-bit lossless
+       compression is not always possible, zfp is usually accurate to
+       within machine epsilon in near-lossless mode, and is often orders
+       of magnitude more accurate than other lossy compressors.
+
     """
 
     homepage = "http://computation.llnl.gov/projects/floating-point-compression"
diff --git a/var/spack/repos/builtin/packages/zlib/package.py b/var/spack/repos/builtin/packages/zlib/package.py
index e1cbdc7e28..6d799fb05a 100644
--- a/var/spack/repos/builtin/packages/zlib/package.py
+++ b/var/spack/repos/builtin/packages/zlib/package.py
@@ -24,11 +24,10 @@
 ##############################################################################
 from spack import *
 
+
 class Zlib(Package):
-    """zlib is designed to be a free, general-purpose, legally unencumbered --
-       that is, not covered by any patents -- lossless data-compression library for
-       use on virtually any computer hardware and operating system.
-    """
+    """A free, general-purpose, legally unencumbered lossless
+       data-compression library."""
 
     homepage = "http://zlib.net"
     url      = "http://zlib.net/zlib-1.2.8.tar.gz"
diff --git a/var/spack/repos/builtin/packages/zoltan/package.py b/var/spack/repos/builtin/packages/zoltan/package.py
index 841ff3f4a2..0094395968 100644
--- a/var/spack/repos/builtin/packages/zoltan/package.py
+++ b/var/spack/repos/builtin/packages/zoltan/package.py
@@ -22,16 +22,22 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-import re, os, glob
+import re
+import os
+import glob
 from spack import *
 
+
 class Zoltan(Package):
-    """The Zoltan library is a toolkit of parallel combinatorial algorithms for
-       parallel, unstructured, and/or adaptive scientific applications.  Zoltan's
-       largest component is a suite of dynamic load-balancing and paritioning
-       algorithms that increase applications' parallel performance by reducing
-       idle time.  Zoltan also has graph coloring and graph ordering algorithms,
-       which are useful in task schedulers and parallel preconditioners."""
+    """The Zoltan library is a toolkit of parallel combinatorial algorithms
+       for parallel, unstructured, and/or adaptive scientific
+       applications.  Zoltan's largest component is a suite of dynamic
+       load-balancing and paritioning algorithms that increase
+       applications' parallel performance by reducing idle time.  Zoltan
+       also has graph coloring and graph ordering algorithms, which are
+       useful in task schedulers and parallel preconditioners.
+
+    """
 
     homepage = "http://www.cs.sandia.gov/zoltan"
     base_url = "http://www.cs.sandia.gov/~kddevin/Zoltan_Distributions"
@@ -41,8 +47,10 @@ class Zoltan(Package):
     version('3.6', '9cce794f7241ecd8dbea36c3d7a880f9')
     version('3.3', '5eb8f00bda634b25ceefa0122bd18d65')
 
-    variant('debug', default=False, description='Builds a debug version of the library')
-    variant('shared', default=True, description='Builds a shared version of the library')
+    variant('debug', default=False,
+            description='Builds a debug version of the library')
+    variant('shared', default=True,
+            description='Builds a shared version of the library')
 
     variant('fortran', default=True, description='Enable Fortran support')
     variant('mpi', default=False, description='Enable MPI support')
@@ -51,8 +59,11 @@ class Zoltan(Package):
 
     def install(self, spec, prefix):
         config_args = [
-            '--enable-f90interface' if '+fortan' in spec else '--disable-f90interface',
-            '--enable-mpi' if '+mpi' in spec else '--disable-mpi',
+            '--enable-f90interface'
+            if '+fortan' in spec else '--disable-f90interface',
+
+            '--enable-mpi'
+            if '+mpi' in spec else '--disable-mpi',
         ]
         config_cflags = [
             '-O0' if '+debug' in spec else '-O3',
@@ -68,7 +79,8 @@ def install(self, spec, prefix):
             config_args.append('CC=%s/mpicc' % spec['mpi'].prefix.bin)
             config_args.append('CXX=%s/mpicxx' % spec['mpi'].prefix.bin)
             config_args.append('--with-mpi=%s' % spec['mpi'].prefix)
-            config_args.append('--with-mpi-compilers=%s' % spec['mpi'].prefix.bin)
+            config_args.append('--with-mpi-compilers=%s' %
+                               spec['mpi'].prefix.bin)
 
         # NOTE: Early versions of Zoltan come packaged with a few embedded
         # library packages (e.g. ParMETIS, Scotch), which messes with Spack's
@@ -89,13 +101,15 @@ def install(self, spec, prefix):
         make()
         make('install')
 
-        # NOTE: Unfortunately, Zoltan doesn't provide any configuration options for
-        # the extension of the output library files, so this script must change these
-        # extensions as a post-processing step.
+        # NOTE: Unfortunately, Zoltan doesn't provide any configuration
+        # options for the extension of the output library files, so this
+        # script must change these extensions as a post-processing step.
         if '+shared' in spec:
             for libpath in glob.glob('lib/*.a'):
-                libdir, libname = (os.path.dirname(libpath), os.path.basename(libpath))
-                move(libpath, os.path.join(libdir, re.sub(r'\.a$', '.so', libname)))
+                libdir, libname = (os.path.dirname(libpath),
+                                   os.path.basename(libpath))
+                move(libpath, os.path.join(
+                    libdir, re.sub(r'\.a$', '.so', libname)))
 
         mkdirp(prefix)
         move('include', prefix)
diff --git a/var/spack/repos/builtin/packages/zsh/package.py b/var/spack/repos/builtin/packages/zsh/package.py
index 2c9ed4c6e7..4c27cd3ec2 100644
--- a/var/spack/repos/builtin/packages/zsh/package.py
+++ b/var/spack/repos/builtin/packages/zsh/package.py
@@ -24,6 +24,7 @@
 ##############################################################################
 from spack import *
 
+
 class Zsh(Package):
     """
     Zsh is a shell designed for interactive use, although it is also a powerful