* treats correctly a change from `explicit=False` to `explicit=True` in an external package DB entry.
* added unit tests
* fixed issues raised by @tgamblin . In particular the PR is no more hash-changing for packages that are not external.
* added a test to check correctness of a spec/yaml round-trip for things that involve an external
* Don't find external module path at each step of concretization
* it's not necessary.. The paths are retrieved at the end of concretizaion
* Don't find replacements for external packages.
* Test root of the DAG if external
* No reason not to test if the root of the DAG is external when external
packages are now first class citizens!
* Create `external` property for Spec (for external_path and external_module)
* Allow users to specify external package paths relative to spack
* Canonicalize external package paths so that users may specify their
locations relative to spack's directory.
* Update tests to use new external_path and external properly.
* skip license hooks on external
- Spack doesn't need eggs -- it manages its own directories
- Simplify install layout and reduce sys.path searches by installing all
packages flat (eggs are deprecated for wheels, and this is also what
wheels do).
- We now supply the --single-version-externally-managed argument to
`setup.py install` for setuptools packages and setuptools.
- modify packages to only use setuptools args if setuptools is an
immediate dependency
- Remove setuptools from packages that do not need it.
- Some packages use setuptools *only* when certain args (likeb
'develop' or 'bdist') are supplied to setup.py, and they specifically
do not use setuptools for installation.
- Spack never calls setup.py this way, so just removing the setuptools
dependency works for these packages.
* fetch git submodules recursively
This is useful if the submodules have submodules themselves. On
the other hand doing a recursive update doesn't hurt if there
is only one level.
* fetch submodules with depth=1 as well (fix#2190)
* use git submodule with depth only for git>=1.8.4
- Spack install would previously fail if it could not load a package for
the thing being uninstalled.
- This reworks uninstall to handle cases where the package is no longer
known, e.g.:
a) the package has been renamed or is no longer in Spack
b) the repository the package came from is no longer registered in
repos.yaml
- gcc on macOS says it's version 4.2.1, but it's really clang, and it's
actually the *same* clang as the system clang.
- It also doesn't respond with a full path when called with
--print-file-name=libstdc++.dylib, which is expected from gcc in abi.py.
Instead, it gives a relative path and _gcc_compiler_compare doesn't
understand what to do with it. This results in errors like:
```
lib/spack/spack/abi.py, line 71, in _gcc_get_libstdcxx_version
libpath = os.readlink(output.strip())
OSError: [Errno 2] No such file or directory: 'libstdc++.dylib'
```
- This commit does two things:
1. Ignore any gcc that's actually clang in abi.py. We can probably do
better than this, but it's not clear there is a need to, since we
should handle the compiler as clang, not gcc.
2. Don't auto-detect any "gcc" that is actually clang anymore. Ignore
it and expect people to use clang (which is the default macOS
compiler anyway).
Users can still add fake gccs to their compilers.yaml if they want, but
it's discouraged.
* Checksum code wasn't opening binary files as binary.
- Fixes Python 3 issue where files are opened as unicode text by default,
and decoding fails for binary blobs.
* Simplify fetch test parametrization.
* - add tests for URL fetching and checksumming.
- fix coverage on interface functions in FetchStrategy superclass
- add some extra crypto tests.
* Package install remove prior unfinished installs
Depending on how spack is terminated in the middle of building a
package it may leave a partially installed package in the install
prefix. Originally Spack treated the package as being installed if
the prefix was present, in which case the user would have to
manually remove the installation prefix before restarting an
install. This commit adds a more thorough check to ensure that a
package is actually installed. If the installation prefix is present
but Spack determines that the install did not complete, it removes
the installation prefix and starts a new install; if the user has
enabled --keep-prefix, then Spack reverts to its old behavior.
* Added test for partial install handling
* Added test for restoring DB
* Style fixes
* Restoring 2.6 compatibility
* Relocated repair logic to separate function
* If --keep-prefix is set, package installs will continue an install from an existing prefix if one is present
* check metadata consistency when continuing partial install
* Added --force option to make spack reinstall a package (and all dependencies) from scratch
* Updated bash completion; removed '-f' shorthand for '--force' for install command
* dont use multiple write modes for completion file
* Add tests to mercurial package
* Add support for --insecure with mercurial fetching
* Install man pages and tab-completion scripts
* Add tests and latest version for all deps
* Flake8 fix
* Use certifi module to find CA certificate
* Flake8 fix
* Unset PYTHONPATH when running hg
* svn_fetch should use to svn-test, not hg-test
* Drop Python 3 support in Mercurial
Python 3 support is a work in progress and isn't currently
recommended:
https://www.mercurial-scm.org/wiki/SupportedPythonVersions
* Test both secure and insecure hg fetching
* Test both secure and insecure git and svn fetching
`set_executable` now checks if a user/group.other had read permission
on a file and if it does then it sets the corresponding executable
bit.
See #1483.
Fixes#2587
The concretizer falls back on using the root architecture (followed
by the default system architecture) to fill in unspecified arch
properties for a spec. It failed to check cases where the root could
be None.
* Remove fake URLs from Spack
* Ignore long lines for URLs that start with ftp:
* Preliminary changes to version regexes
* New redesign of version regexes
* Allow letters in version-only
* Fix detection of versions that end in Final
* Rearrange a few regexes and add examples
* Add tests for common download repositories
* Add test cases for common tarball naming schemes
* Finalize version regexes
* spack url test -> spack url summary
* Clean up comments
* Rearrange suffix checks
* Use query strings for name detection
* Remove no longer necessary url_for_version functions
* Strip off extraneous information after package name
* Add one more test
* Dot in square brackets does not need to be escaped
* Move renaming outside of parse_name_offset
* Fix versions for a couple more packages
* Fix flake8 and doc tests
* Correctly parse Python, Lua, and Bio++ package names
* Use effective URLs for mfem
* Add checksummed version to mitos
* Remove url_for_version from STAR-CCM+ package
* Revert changes to version numbers with underscores and dashes
* Fix name detection for tbb
* Correctly parse Ruby gems
* Reverted mfem back to shortened URLs.
* Updated instructions for better security
* Remove preferred=True from newest version
* Add tests for new `spack url list` flags
* Add tests for strip_name_suffixes
* Add unit tests for version separators
* Fix bugs related to parseable name but in parseable version
* Remove dead code, update docstring
* Ignore 'binary' at end of version string
* Remove platform from version
* Flip libedit version numbers
* Re-support weird NCO alpha/beta versions
* Rebase and remove one new fake URL
* Add / to beginning of regex to avoid picking up similarly named packages
* Ignore weird tar versions
* Fix bug in url parse --spider when no versions found
* Less strict version matching for spack versions
* Don't rename Python packages
* Be a little more selective, version must begin with a digit
* Re-add fake URLs
* Fix up several other packages
* Ignore more file endings
* Add parsing support for Miniconda
* Update tab completion
* XFAILS are now PASSES for 2 web tests
- _spider in web.py was actually failing to spider deeper than a certain
point.
- Fixed multiprocessing pools to not use daemons and to allow recursive
spawning.
- Added detailed tests for spidering and for finding archive versions.
- left some xfail URL finding exercises for the reader.
- Fix noqa annotations for some @when decorators
- Clean up spec_syntax tests: don't dependend on DB order.
- spec_syntax hash parsing tests were strongly dependent on the order the
DB was traversed.
- Tests now specifically grab the specs they want from the mock DB.
- Tests are more readable as a result.
- Add Python3 versions to Travis tests.
1. Fix#2807: Can't depend on virtual and non-virtual package
- This is tested by test_my_dep_depends_on_provider_of_my_virtual_dep in
the concretize.py test.
- This was actually working in the test suite, but it depended on the
order the dependencies were resolved in. Resolving non-virtual then
virtual worked, but virtual, then non-virtual did not.
- Problem was that an unnecessary copy was made of a spec that already
had some dependencies set up, and the copy lost half of some of the
dependency relationships. This caused the "can'd depend on X twice
error".
- Fix by eliminating unnecessary copy and ensuring that dep parameter of
_merge_dependency is always safe to own -- i.e. it's a defensive copy
from somewhere else.
2. Fix bug and simplify concretization of deptypes.
- deptypes weren't being accumulated; they were being set on each
DependencySpec. This could cause concretization to get into an infinite
loop.
- Fixed by accumulating deptypes in DependencySpec.update_deptypes()
- Also simplified deptype normalization logic: deptypes are now merged in
constrain() like everything else -- there is no need to merge them
specially or to look at dpeendents in _merge_dependency().
- Add some docstrings to deptype tests.
- Get rid of pkgsort() usage for preferred variants.
- Concretization is now entirely based on key-based sorting.
- Remove PreferredPackages class and various spec cmp() methods.
- Replace with PackagePrefs class that implements a key function for
sorting according to packages.yaml.
- Clear package pref caches on config test.
- Explicit compare methods instead of total_ordering in Version.
- Our total_ordering backport wasn't making Python 3 happy for some
reason.
- Python 3's functools.total_ordering and spelling the operators out
fixes the problem.
- Fix unicode issues with spec hashes, json, & YAML
- Try to use str everywhere and avoid unicode objects in python 2.
- Remove ascii encoding assumption from spack_yaml
- proc.communicate() returns bytes; convert to str before adding.
- Fix various byte string/unicode issues for Python 2/3 support
- Need to decode subprocess output as utf-8 in from_sourcing_files.
- Fix comments in strify()
- convert print, StringIO, except as, octals, izip
- convert print statement to print function
- convert StringIO to six.StringIO
- remove usage of csv reader in Spec, in favor of simple regex
- csv reader only does byte strings
- convert 0755 octal literals to 0o755
- convert `except Foo, e` to `except Foo as e`
- fix a few places `str` is used.
- may need to switch everything to str later.
- convert iteritems usages to use six.iteritems
- fix urllib and HTMLParser
- port metaclasses to use six.with_metaclass
- More octal literal conversions for Python 2/3
- Fix a new octal literal.
- Convert `basestring` to `six.string_types`
- Convert xrange -> range
- Fix various issues with encoding, iteritems, and Python3 semantics.
- Convert contextlib.nested to explicitly nexted context managers.
- Convert use of filter() to list comprehensions.
- Replace reduce() with list comprehensions.
- Clean up composite: replace inspect.ismethod() with callable()
- Python 3 doesn't have "method" objects; inspect.ismethod returns False.
- Need to use callable in Composite to make it work.
- Update colify to use future division.
- Fix zip() usages that need to be lists.
- Python3: Use line-buffered logging instead of unbuffered.
- Python3 raises an error with unbuffered I/O
- See https://bugs.python.org/issue17404
- Update YAML version to support Python 3
- Python 3 support for ordereddict backport
- Exclude Python3 YAML from version tests.
- Vendor six into Spack.
- Make Python version-check tests work with Python 3
- Add ability to add version check exceptions with '# nopyqver' line
comments.
* Run python setup.py test if --run-tests
* Attempt to import the Python module after installation
* Add testing support to numpy and scipy
* Remove duplicated comments
* Update to new run-tests callback methodology
* Remove unrelated changes for another PR
* perl: make extendable and add Module::Build package
* perl: allow 'spack create' to identify perl packages from their contents
* perl-module-build: fix indenting of package docstring
* perl: split install() method for extensions into phases
* perl: auto-detect build method (Makefile.PL vs Build.PL) and define a 'check' method
* PerlPackage: use import statements similar to those in AutotoolsPackage
* PerlModule: fix detection of Build.PL
* PerlPackageTemplate: remove extraneous lines to avoid flake8 warnings
* PerlPackageTemplate: split into separate templates for Makefile.PL and Build.PL
* PerlPackage: add cross-references to docstrings
* AutotoolsPackage: fix ambiguous cross-references to avoid errors in doc tests
* PerlbuildPackageTemplate: depend on perl-module-build if Build.PL exists
- Spack find would fail with "unknown namespace" for some queries when a
package from an unknown namespace was installed.
- Solve by being conservative: assume unknown packages are NOT providers
of virtual dependencies.
- deactivate -a wouldn't work if the installation's package was no longer
available.
- Fix installed_extensions_for so that it doesn't need to look at the
package.py file.
This fixes the problem described in #3374, which describes `spack find` ignore explicit/implicit.
I believe that this was broken in #2626.
This restores the behavior of implicit/explicit for me.
I believe that it does not screw anything else up, but ....
* Order listed compiler sections
"spack compiler list" output compiler sections in an arbitrary order.
With this commit compiler sections are ordered primarily by compiler
name and then by operating system and target.
* Compiler search lists config files with compilers
If a compiler entry is already defined in a configuration file that
the user does not know about, they may be confused when that compiler
is not added by "spack compiler find". This commit adds a message at
the end of "spack compiler find" to inform the user of the locations
of all config files where compilers are defined.
Fixes#1476
Concretization uses compilers defined in config files and if those
are not available defaults to searching typical paths where the
detected operating system would have a compiler. If there is an OS
update, the detected OS can change; in this case all compilers
defined in the config files would no longer match (because they would
be associated with the previous OS version). The error message in
this case was too vague. This commit adds logic for detecting when it
is likely that the OS has been updated (in particular when that
affects compiler concretization) and improves the information provided
to the user in the error message.
* Dont propagate flags between different compilers
Fixes#2786
Previously when a spec had no parents with an equivalent compiler,
Spack would default to adding the compiler flags associated with the
root of the DAG. This eliminates that default.
* added test for compiler flag propagation
* simplify compiler flag propagation logic
Fixes#3428
Users can run 'spack compiler find' to automatically initialize their
compilers.yaml configuration file. It also turns out that Spack will
implicitly initialize the compilers configuration file as part of
detecting compilers if none are found (so if a user were to attempt to
concretize a spec without running 'spack compiler find' it would not
fail). However, in this case Spack was overlooking its own implicit
initialization of the config files and would report that no new
compilers were found. This commit removes implicit initialization when
the user calls 'spack compiler find'.
This did not surface until #2999 because the 'spack compiler' command
defaulted to using a scope 'user/platform' that was not accounted for
in get_compiler_config (where the implicit initialization logic
predates the addition of this new scope); #2999 removed the scope
specification when checking through config files, leading to the
implicit initialization.
Previously, this would fail with a NoSuchMethodError:
class Package(object):
# this is the default implementation
def some_method(self):
...
class Foo(Package):
@when('platform=cray')
def some_method(self):
...
@when('platform=linux')
def some_method(self):
...
This fixes the implementation of `@when` so that the superclass method
will be invoked when no subclass method matches.
Adds tests to ensure this works, as well.
* default scope for config command is made consistent with cmd/__init__ default
* dont specify a scope when looking for compilers with a matching spec (since compiler concretization is scope-independent)
* config edit should default to platform-specific file only for compilers
* when duplicate compiler specs are detected, the exception raised now points the user to the files where the duplicates appear
* updated error message to emphasize that a spec is duplicated (since multiple specs can reference the same compiler)
* 'spack compilers' is now also broken down into sections by os and target
* Added tests for new compiler methods
Modifications:
- `dump_packages` copies build dependencies into `$prefix/.spack`, as well as the link/run dependencies that we already copied there.
- fake installs copy dependency packages into `$prefix/.spack` as well
- Added a new interface for Specs to pass build information
- Calls forwarded from Spec to Package are now explicit
- Added descriptor within Spec to manage forwarding
- Added state in Spec to maintain query information
- Modified a few packages (the one involved in spack install pexsi) to showcase changes
- This uses an object wrapper to `spec` to implement the `libs` sub-calls.
- wrapper is returned from `__getitem__` only if spec is concrete
- allows packagers to access build information easily
It seems the tests in `packages.py` were running just because we had a specific order of execution. This should fix the problem, and make the test_suite more resilient to running order.
- Fix format printing to match command line for hashes and full name formats
- Update spack graph to use new format
- Changed format string signifier for hashes from `$#` to `$/`
Modules generated by the module creation machinery currently print out
a notice that warnts the user that things are being autoloaded. In
some situations those warnings are problematic. See #2754 for
discussion.
This is a first cut at optionally disabling the warning messages:
- adds a helper tothe EnvModule base class that encapsulates the
config file variable;
- adds a method to the base class that provides a default (empty)
code fragment for generating a warning message;
- passes the warning fragment into the bit that formats the autoload
string;
- adds specialized autload_warner() methods in the tcl and lmod
subclasses;; and finally
- touches up the autoload_format strings in the specialized classes.
Add the ability to the modules generation process to blacklist
packages that were installed implicitly. One can still whitelist
modules that were installed implicitly.
This changes adds a `blacklist_implicts` boolean as a peer to the
`whitelist` and `blacklist` arrays, e.g.:
```
modules:
enable::
- lmod
lmod:
whitelist:
- 'lua'
- 'py-setuptools'
blacklist:
- '%gcc@4.8.3'
blacklist_implicits: True
```
It adds a small helper in `spec.py` and then touches up the package
filtering code in `modules.py`.
* Replace `spack urls` and `spack url-parse` with `spack url`
* Allow spack url list to only list incorrect parsings
* Add spack url test reporting
* Add unit tests for new URL commands
* Add several new R packages
* Add a few more R packages
* Update more versions
* Convert Package to RPackage
* Add a few more packages
* Add missing dependencies
* AutotoolsPackage: added configure_directory to permit build out of source. The configure script executable is now invoked with an absolute path. Modified a few packages accordingly.
* build_systems: functions returning directories are now properties
* build_systems: fixed issues with tcl and tk
* AutotoolsPackage: reworked recipe for autoreconf
* Spec.satisfies accesses Spec.concrete as property
Fixes#2760
When copying a spec, _concrete is always set to False for each
dependency. "Spec.satisfies" was accessing the member "_concrete"
directly instead of using the property "concrete". This means that
if you copy a spec, the dependencies will be considered equal, but
did not necessarily satisfy one another. Spec.satisfies is a
prerequisite for a package to be considered an extension; as a
consequence, an extension with run-time dependencies that were also
extensions did not activate those extensions. This updates
Spec.satisfies to avoid checking the cached member "_concrete"
directly.
* Added test to check for activation of dependency extension
* Added test to check for transitive satisfiability between a spec and its copy
- Allows hashes to be specified after other parts of the spec
- Does not allow other parts of the spec to be specified after the hash
- The hash must either end input or be followed by another separate spec
- The next spec cannot be an anonymous spec (it must start with a package name or a hash)
See #2769 (after it was merged) for further discussion of this interface addition. That discussion resulted in these requirements:
```
python # 1 spec
/abc123 # 1 spec
python /abc123 # 1 spec
/456789 # 1 spec
python /abc123 /456789 # 2 specs
python /456789 /abc123 # 2 specs
/abc123 /456789 # 2 specs
/456789 /abc123 # 2 specs
/456789 /abc123 python # 3 specs
```
assuming `abc123` and `456789` are both hashes of different python specs.
* Add support for IBM threaded compilers, xl*_r
Added new compiler class, xl_r; added default flags to the compilers.yaml file.
* Add cppflags to the set of default flags to be added to the compilers stanza in compiler.yaml.
These flags are optional. Only defined flags will be listed in the compilers.yaml file.
* Fix scripting warnings revealed by flake8.
Updated __init__.py and xl_r.py to conform with flake8 rules.
* Add justification to the definition of the XL default compiler flags.
* PackageMeta: `run_before` is an alias of `precondition`, `run_after` an alias of `sanity_check`
* PackageMeta: removed `precondition` and `sanity_check`
* PackageMeta: decorators are now free-standing
* package: modified/added docstrings. Fixed the semantics of `on_package_attributes`.
* package: added unit test assertion as side effects of install
* build_systems: factored build-time test running into base class
* r: updated decorators in package.py
* docs: updated decorator names
* documentation: reworked packaging guide to add build-system phases
* documentation: improvements to AutotoolsPackage autodocs
* build_systems: updated autodocs
* run-tests: added a few information on how to run tests fixes#2606 fixes#2605
* documentation: fixed items brought up by @davydden
* typos in docs
* consistent use of 'build system' (i.e. removed 'build-system' from docs)
* added a note on possible default implementations for build-time tests
* documentation: fixed items brought up by @citibeth
* added note to explain the difference between build system and language used in a package
* capitalized bullet items
* added link to API docs
* documentation: fixed multiple cross-references after rebase
* documentation: fixed minor issues raised by @tgamblin
* documentation: added entry in table for the `PythonPackage` class
* docs: fixed issues brought up by @citybeth in the second review
Previously, fix_darwin_install_name would only handle dependencies that have no path set, and it ignore dependencies that have the build directory as path baked in. Catch this, and replace it by the install directory.
- Add a PythonPackage class with build system support.
- Support build phases in PythonPackage
- Add a custom sanity check for PythonPackages
- Get rid of nolink dependencies in python packages
- Update spack create to use new PythonPackage class
- Port most of Python packages to new PythonPackage class
- Conducted a massive install and activate of Python packages.
- Fixed bugs introduced by install and activate.
- Update API docs on PythonPackage
* Initial changes to spack create command
* Get 'spack create <url>' working again
* Simplify call to BuildSystemGuesser
* More verbose output of spack create
* Remove duplicated code from spack create and spack checksum
* Add better documentation to spack create docstrings
* Fix pluralization bug
* Flake8
* Update documentation on spack create and deprecate spack edit --force
* Make it more obvious when we are renaming a package
* Further deprecate spack edit --force
* Fix unit tests
* Rename default template to generic template
* Don't add automake/autoconf deps to Autotools packages
* Remove changes to default $EDITOR
* Completely remove all traces of spack edit --force
* Remove grammar changes to make the PR easier to review
* Fixed parser to eliminate need for escape quotes. TODO: Fix double call to shlex, fix spaces in spec __str__
* Fixed double shlex
* cleanup
* rebased on develop
* Fixed parsing for multiple specs; broken since #360
* Revoked elimination of the `-` sigil in the syntax, and added it back into tests
* flake8
* more flake8
* Cleaned up dead code and added comments to parsing code
* bugfix for spaces in arguments; new bug found in testing
* Added unit tests for kv pairs in parsing/lexing
* Even more flake8
* ... yet another flake8
* Allow multiple specs in install
* unfathomable levels of flake8
* Updated documentation to match parser fix
* Added customization for make targets in 'build' and 'install' phases for CMakePackage
* Use rst in build system docs so that Sphinx generates nice API docs
* Allow AutotoolsPackages to be built in a different directory
* Flake8
* Fix missing import
* Allow configure to be located in different directory
* Update espressopp to use build targets
* Flake8
* Sphinx fix, lists must be a new paragraph
* Back out change that allowed a configure script in a different directory than build_directory
* Add missing deps, build in parallel
* Missing space for rst list
* Removing the nobuild, nolink, and alldeps dependency types in favor of being explicit.
* This will help with maintenance going forward, as adding more dependency types won't affect existing declared dependencies in weird ways.
* default deptype is still `('build', 'link')`
* Rename packages
* Upcasing depends_on() in packages.
* Downcased extends('r')
* Fixed erroneously changed URL that had slipped through.
* Fixed typo
* Fixed link from documentation into package source code.
* Fixed another doc problem.
* Changed underscores to dashes in package names.
* Added test to enforce lowercase, no-underscore naming convention.
* Fix r-xgboost
* Downcase more instances of 'R' in package auto-creation.
* Fix test.
* Converted unit test packages to use dashes not underscores
* Downcase `r` in the docs.
* Update module_file_support.rst
Fix r->R for class R.
* Porting: substitute nose with ytest
This huge commit substitutes nose with pytest as a testing system. Things done here:
* deleted external/nose as it is no longer used
* moved mock resources in their own directory 'test/mock/'
* ported two tests (cmd/find, build_system) to pytest native syntax as an example
* build_environment, log: used monkeypatch instead of try/catch
* moved global mocking of fetch_cache to an auto-used fixture
* moved global mocking from test/__init__.py to conftest.py
* made `spack test` a wrapper around pytest
* run-unit-tests: avoid running python 2.6 tests under coverage to speed them up
* use `pytest --cov` instead of coverage run to cut down testing time
* mock/packages_test: moved mock yaml configuration to files instead of leaving it in the code as string literals
* concretize.py: ported tests to native pytest, reverted multiprocessing in pytest.ini as it was creating the wrong report for coveralls
* conftest.py, fixtures: added docstrings
* concretize_preferences.py: uses fixtures instead of subclassing MockPackagesTest
* directory_layout.py: uses fixtures instead of subclassing MockPackagesTest
* install.py: uses fixtures instead of subclassing MockPackagesTest
* optional_deps.py: uses fixtures instead of subclassing MockPackagesTest
optional_deps.py: uses fixtures instead of subclassing MockPackagesTest
* packages.py: uses fixtures instead of subclassing MockPackagesTest
* provider_index.py: uses fixtures instead of subclassing MockPackagesTest
* spec_yaml.py: uses fixtures instead of subclassing MockPackagesTest
* multimethod.py: uses fixtures instead of subclassing MockPackagesTest
* install.py: now uses mock_archive_url
* git_fetch.py: uses fixtures instead of subclassing MockPackagesTest
* hg_fetch.py: uses fixtures instead of subclassing MockPackagesTest
* svn_fetch.py, mirror.py: uses fixtures instead of subclassing MockPackagesTest
repo.py: deleted
* test_compiler_cmd.py: uses fixtures instead of subclassing MockPackagesTest
* cmd/module.py, cmd/uninstall.py: uses fixtures instead of subclassing MockDatabase
* database.py: uses fixtures instead of subclassing MockDatabase, removed mock/database
* pytest: uncluttering fixture implementations
* database: changing the scope to 'module'
* config.py: uses fixtures instead of subclassing MockPackagesTest
* spec_dag.py, spec_semantics.py: uses fixtures instead of subclassing MockPackagesTest
* stage.py: uses fixtures instead of subclassing MockPackagesTest. Removed mock directory
* pytest: added docstrings to all the fixtures
* pytest: final cleanup
* build_system_guess.py: fixed naming and docstrings as suggested by @scheibelp
* spec_syntax.py: added expected failure on parsing multiple specs closes#1976
* Add pytest and pytest-cov to Spack externals.
* Make `spack flake8` ignore externals.
* run-unit-tests runs spack test and not pytest.
* Remove all the special stuff for `spack test`
- Remove `conftest.py` magic and all the special case stuff in `bin/spack`
- Spack commands can optionally take unknown arguments, if they want to
handle them.
- `spack test` is now a command like the others.
- `spack test` now just delegates its arguments to `pytest`, but it does
it by receiving unknown arguments and NOT taking an explicit
help argument.
* Fix error in fixtures.
* Improve `spack test` command a bit.
- Now supports an approximation of the old simple interface
- Also supports full pytest options if you want them.
* Use external coverage instead of pytest-cov
* Make coverage use parallel-mode.
* change __init__.py docs to include pytest
