* SV variants are evaluated correctly in `when=` statements fixes#4113
The problem here was tricky:
```python
spec.satisfies(other)
```
changes already the MV variants in others into SV variants (where
necessary) if spec is concrete. If it is not concrete it does
nothing because we may be acting at a pure syntactical level.
When evaluating a `when=` keyword spec is for sure not concrete
as it is in the middle of the concretization process. In this case we
have to trigger manually the substitution in other to not end up
comparing a MV variant "foo=bar" to a SV variant "foo=bar" and having
False in return. Which is wrong.
* sv variants: improved error message for typos in "when=" statements
* bash completion: fixed `_spack_create-db-tarball': not a valid identifier
* bash completion: dashes are translated to underscores
This also fixes the name of the subfunction to be called, as apparently
it was not updated after moving the command `create-db-tarball`.
- Add -P <STAT> argument so that caller can specify a sort column for
cProfile. Can specify multiple columns with commas. e.g.:
spack -P cumtime,module
- Add --lines option to Spack spec to control number of profile lines
displayed
- Sort by time by default (because it works in all Python versions)
- Show sort column options in command help.
- Do a short profile run in the unit tests.
Modifications:
- added support for multi-valued variants
- refactored code related to variants into variant.py
- added new generic features to AutotoolsPackage that leverage multi-valued variants
- modified openmpi to use new features
- added unit tests for the new semantics
This allows people on systems that don't have all the fetchers to still
run Spack tests. Mark tests that require git, subversion, or mercurial to
be skipped if they're not installed.
* Filter all system paths introduced by dependencies from PATH
* Make sure path filtering works *even* for trailing slashes
* Revert some of the changes to `filter_system_paths`
* Yes, `bin64` is a real thing (sigh)
* add tests: /usr, /usr/, /usr/local/../bin, etc.
* Convert from rST to Google-style docstrings
