new package to be added: NuT (#4760)

* new package to be added: NuT

* removed cmake_args() and made other changes as suggested

* Added setup_environment()

* PEP8 compliant

* edited version name, build_targets, and files/directories to install

* corrected executable directory

* compiler dependencies based on version

var/spack/repos/builtin/packages/nut/package.py

@@ -0,0 +1,62 @@
+##############################################################################
+# 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 *
+
+
+class Nut(CMakePackage):
+    """NuT is Monte Carlo code for neutrino transport and
+    is a C++ analog to the Haskell McPhD code.
+    NuT is principally aimed at exploring on-node parallelism
+    and performance issues."""
+
+    homepage = "https://github.com/lanl/NuT"
+    url      = "https://github.com/lanl/NuT.git"
+    tags     = ['proxy-app']
+
+    version(
+        'serial', git='https://github.com/lanl/NuT.git',
+        branch='master')
+    version(
+        'openmp', git='https://github.com/lanl/NuT.git',
+        branch='openmp')
+
+    depends_on('random123')
+
+    # serial must be built with clang
+    conflicts('%gcc', when='@serial')
+    conflicts('%intel', when='@serial')
+    conflicts('%pgi', when='@serial')
+    conflicts('%xl', when='@serial')
+    conflicts('%nag', when='@serial')
+
+    def setup_environment(self, spack_env, run_env):
+        spack_env.set('RANDOM123_DIR', self.spec['random123'].prefix)
+
+    build_targets = ['VERBOSE=on']
+
+    def install(self, spec, prefix):
+        install('README.md', prefix)
+        mkdirp(prefix.bin)
+        install('spack-build/test/nut_unittests', prefix.bin)