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* Fix use of sys.executable for module/env commands
* Fix unit tests
* More consistent quotation, less duplication
* Fix import syntax
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Check if patchelf is executable, not binary, in case a site is wrapping it.
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When removing packages from a view, extensions were being deactivated
in an arbitrary order. Extensions must be deactivated in preorder
traversal (dependents before dependencies), so when this order was
violated the view update would fail.
This commit ensures that views deactivate extensions based on a
preorder traversal and adds a test for it.
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DAG hash already exists at mirror (#14412)
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* Spack can uninstall unused specs
fixes #4382
Added an option to spack uninstall that removes all unused specs i.e.
build dependencies or transitive dependencies that are left
in the store after the specs that pulled them in have been removed.
* Moved the functionality to its own command
The command has been named 'spack autoremove' to follow the naming used
for the same functionality by other widely known package managers i.e.
yum and apt.
* Speed-up autoremoving specs by not locking and re-reading the scratch DB
* Make autoremove work directly on Spack's store
* Added unit tests for the new command
* Display a terser output to the user
* Renamed the "autoremove" command "gc"
Following discussion there's more consensus around
the latter name.
* Preserve root specs in env contexts
* Instead of preserving specs, restrict gc to the active environment
* Added docs
* Added a unit test for gc within an environment
* Updated copyright to 2020
* Updated documentation according to review
Rephrased a couple of sentences, added references to
`spack find` and dependency types.
* Updated function naming and docstrings
* Simplified computation of unused specs
Since the new approach uses private attributes of the DB
it has been coded as a method of that class rather than a
freestanding function.
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The imports in `spec.py` are getting to be pretty unwieldy.
- [x] Remove all of the `import from` style imports and replace them with
`import` or `import as`
- [x] Remove a number names that were exported by `spack.spec` that
weren't even in `spack.spec`
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The latest cdash test creates a local cdash_reports directory, but it
should do that in a tmpdir.
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Previously, `spack test` automatically passed all of its arguments to
`pytest -k` if no options were provided, and to `pytest` if they were.
`spack test -l` also provided a list of test filenames, but they didn't
really let you completely narrow down which tests you wanted to run.
Instead of trying to do our own weird thing, this passes `spack test`
args directly to `pytest`, and omits the implicit `-k`. This means we
can now run, e.g.:
```console
$ spack test spec_syntax.py::TestSpecSyntax::test_ambiguous
```
This wasn't possible before, because we'd pass the fully qualified name
to `pytest -k` and get an error.
Because `pytest` doesn't have the greatest ability to list tests, I've
tweaked the `-l`/`--list`, `-L`/`--list-long`, and `-N`/`--list-names`
options to `spack test` so that they help you understand the names
better. you can combine these options with `-k` or other arguments to do
pretty powerful searches.
This one makes it easy to get a list of names so you can run tests in
different orders (something I find useful for debugging `pytest` issues):
```console
$ spack test --list-names -k "spec and concretize"
cmd/env.py::test_concretize_user_specs_together
concretize.py::TestConcretize::test_conflicts_in_spec
concretize.py::TestConcretize::test_find_spec_children
concretize.py::TestConcretize::test_find_spec_none
concretize.py::TestConcretize::test_find_spec_parents
concretize.py::TestConcretize::test_find_spec_self
concretize.py::TestConcretize::test_find_spec_sibling
concretize.py::TestConcretize::test_no_matching_compiler_specs
concretize.py::TestConcretize::test_simultaneous_concretization_of_specs
spec_dag.py::TestSpecDag::test_concretize_deptypes
spec_dag.py::TestSpecDag::test_copy_concretized
```
You can combine any list option with keywords:
```console
$ spack test --list -k microarchitecture
llnl/util/cpu.py modules/lmod.py
```
```console
$ spack test --list-long -k microarchitecture
llnl/util/cpu.py::
test_generic_microarchitecture
modules/lmod.py::TestLmod::
test_only_generic_microarchitectures_in_root
```
Or just list specific files:
```console
$ spack test --list-long cmd/test.py
cmd/test.py::
test_list test_list_names_with_pytest_arg
test_list_long test_list_with_keywords
test_list_long_with_pytest_arg test_list_with_pytest_arg
test_list_names
```
Hopefully this stuff will help with debugging test issues.
- [x] make `spack test` send args directly to `pytest` instead of trying
to do fancy things.
- [x] rework `--list`, `--list-long`, and add `--list-names` to make
searching for tests easier.
- [x] make it possible to mix Spack's list args with `pytest` args
(they're just fancy parsing around `pytest --collect-only`)
- [x] add docs
- [x] add tests
- [x] update spack completion
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R packages can contain configure scripts so R needs to be before
autotools in the clue list.
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Test configuration files (except modules.yaml) were in the root level of
test/data, but should really just be in their own directory. The absence
of modules.yaml was also breaking module tests if we got module
preferences after tests started, as the mock modules.yaml was not in the
test directory.
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This avoids parsing modules.yaml on startup.
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The module hook would previously fail if there were no enabled module types.
- Instead of looking for a `KeyError`, default to empty list when the
config variable is not present.
- Convert lambdas to real functions for clarity.
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- Remove legacy yaml_version_check() hook
- Remove the pre_run hook from `hook/__init__.py` and `main.py`
We want to discourage the use of pre-run hooks because they have to run
at startup. To keep Spack fast, we should do things like this lazily
instead of in hooks that require spidering directories full of modules.
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This avoids confusion with mock_configuration.
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Continuing to shave small bits of time off startup --
`spack.cmd.common.arguments` constructs many `Args` objects at module
scope, which has to be done for all commands that import it. Instead of
doing this at load time, do it lazily.
- [x] construct Args objects lazily
- [x] remove the module-scoped argparse fixture
- [x] make the mock config scope set dirty to False by default (like the
regular scope)
This *seems* to reduce load time slightly
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Previously, fixtures like `config`, `database`, and `store` were
module-scoped, but frequently used as test function arguments. These
fixtures swap out global on setup and restore them on teardown. As
function arguments, they would do the right set-up, but they'd leave the
global changes in place for the whole module the function lived in. This
meant that if you use `config` once, other functions in the same module
would inadvertently inherit the mock Spack configuration, as it would
only be torn down once all tests in the module were complete.
In general, we should module- or session-scope the *STATE* required for
these global objects (as it's expensive to create0, but we shouldn't
module-or session scope the activation/use of them, or things can get
really confusing.
- [x] Make generic context managers for global-modifying fixtures.
- [x] Make session- and module-scoped fixtures that ONLY build filesystem
state and create objects, but do not swap out any variables.
- [x] Make seeparate function-scoped fixtures that *use* the session
scoped fixtures and actually swap out (and back in) the global
variables like `config`, `database`, and `store`.
These changes make it so that global changes are *only* ever alive for a
singlee test function, and we don't get weird dependencies because a
global fixture hasn't been destroyed.
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Environment tests pushed config scopes but didn't properly remove them.
- [x] use `with env:` context manager instead of `env.prepare_config_scopes()`
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`PackagePrefs` has had a class-level cache of data from `packages.yaml` for
a long time, but it complicates testing and leads to subtle errors,
especially now that we frequently manipulate custom config scopes and
environments.
Moving the cache to instance-level doesn't slow down concretization or
the test suite, and it just caches for the life of a `PackagePrefs`
instance (i.e., for a single cocncretization) so we don't need to worry
about global state anymore.
- [x] Remove class-level caches from `PackagePrefs`
- [x] Add a cached _spec_order object on each `PackagePrefs` instance
- [x] Remove all calls to `PackagePrefs.clear_caches()`
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Jinja2 costs a tenth to a few tenths of a second to import, so we should avoid importing it on startup.
- [x] only import jinja2 within functions
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Commands like `spack blame` were printig poorly when redirected to files,
as colify reverts to a single column when redirected. This works for
list data but not tables.
- [x] Force a table by always passing `tty=True` from `colify_table()`
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In "spack info" the Variants header currently has two blank
lines under it. That's too much. It looks like the actual
content belongs to something else.
Instead underline the headers to make things more obvious.
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Remove a few remaining mentions of the pyqver package, which was removed in #14289.
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This commit removes the `python_version.py` unit test module
and the vendored dependencies `pyqver2.py` and `pyqver3.py`.
It substitutes them with an equivalent check done using
`vermin` that is run as a separate workflow via Github Actions.
This allows us to delete 2 vendored dependencies that are unmaintained
and substitutes them with a maintained tool.
Also, updates the list of vendored dependencies.
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`ViewDescriptor.regenerate()` calls `get_all_specs()`, which reads
`spec.yaml` files, which is slow. It's fine to do this once, but
`view.remove_specs()` *also* calls it immediately afterwards.
- [x] Pass the result of `get_all_specs()` as an optional parameter to
`view.remove_specs()` to avoid reading `spec.yaml` files twice.
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`ViewDescriptor.regenerate()` was copying specs and stripping build
dependencies, which clears `_hash` and other cached fields on concrete
specs, which causes a bunch of YAML hashes to be recomputed.
- [x] Preserve the `_hash` and `_normal` fields on stripped specs, as
these will be unchanged.
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`os.path.exists()` will report False if the target of a symlink doesn't
exist, so we can avoid a costly call to realpath here.
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`spack install` previously concretized, writes the entire environment
out, regenerated views, then wrote and regenerated views
again. Regenerating views is slow, so ensure that we only do that once.
- [x] add an option to env.write() to skip view regeneration
- [x] add a note on whether regenerate_views() shouldn't just be a
separate operation -- not clear if we want to keep it as part of write
to ensure consistency, or take it out to avoid performance issues.
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Environments need to read the DB a lot when installing all specs.
- [x] Put a read transaction around `install_all()` and `install()`
to avoid repeated locking
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Our `LockTransaction` class was reading overly aggressively. In cases
like this:
```
1 with spack.store.db.read_transaction():
2 with spack.store.db.write_transaction():
3 ...
```
The `ReadTransaction` on line 1 would read in the DB, but the
WriteTransaction on line 2 would read in the DB *again*, even though we
had a read lock the whole time. `WriteTransaction`s were only
considering nested writes to decide when to read, but they didn't know
when we already had a read lock.
- [x] `Lock.acquire_write()` return `False` in cases where we already had
a read lock.
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If a write transaction was nested inside a read transaction, it would not
write properly on release, e.g., in a sequence like this, inside our
`LockTransaction` class:
```
1 with spack.store.db.read_transaction():
2 with spack.store.db.write_transaction():
3 ...
4 with spack.store.db.read_transaction():
...
```
The WriteTransaction on line 2 had no way of knowing that its
`__exit__()` call was the last *write* in the nesting, and it would skip
calling its write function.
The `__exit__()` call of the `ReadTransaction` on line 1 wouldn't know
how to write, and the file would never be written.
The DB would be correct in memory, but the `ReadTransaction` on line 4
would re-read the whole DB assuming that other processes may have
modified it. Since the DB was never written, we got stale data.
- [x] Make `Lock.release_write()` return `True` whenever we release the
*last write* in a nest.
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Lock transactions were actually writing *after* the lock was
released. The code was looking at the result of `release_write()` before
writing, then writing based on whether the lock was released. This is
pretty obviously wrong.
- [x] Refactor `Lock` so that a release function can be passed to the
`Lock` and called *only* when a lock is really released.
- [x] Refactor `LockTransaction` classes to use the release function
instead of checking the return value of `release_read()` / `release_write()`
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`ViewDescriptor.regenerate()` checks repeatedly whether packages are
installed and also does a lot of DB queries. Put a read transaction
around the whole thing to avoid repeatedly locking and unlocking the DB.
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`Environment.added_specs()` has a loop around calls to
`Package.installed()`, which can result in repeated DB queries. Optimize
this with a read transaction in `Environment`.
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`spack spec -I` queries the database for installation status and should
use a read transaction around calls to `Spec.tree()`.
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Checks for deprecated specs were repeatedly taking out read locks on the
database, which can be very slow.
- [x] put a read transaction around the deprecation check
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`get_platform()` is pretty expensive and can be called many times in a
spack invocation.
- [x] memoize `get_platform()`
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