pytest-xprocess is not detected correctly since 0.19.0

[mgorny]

Starting with 0.19.0, pytest-xprocess no longer includes pytest_xprocess module. As a result, all relevant tests are skipped:

$ tox -e py311
py311: install_deps> python -I -m pip install -r requirements/tests.txt
.pkg: install_requires> python -I -m pip install 'setuptools>=40.8.0' wheel
.pkg: _optional_hooks> python /usr/lib/python3.12/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__
.pkg: get_requires_for_build_sdist> python /usr/lib/python3.12/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__
.pkg: get_requires_for_build_wheel> python /usr/lib/python3.12/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__
.pkg: prepare_metadata_for_build_wheel> python /usr/lib/python3.12/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__
.pkg: build_sdist> python /usr/lib/python3.12/site-packages/pyproject_api/_backend.py True setuptools.build_meta __legacy__
py311: install_package_deps> python -I -m pip install Flask 'cachelib>=0.9.0'
py311: install_package> python -I -m pip install --force-reinstall --no-deps /tmp/flask-caching/.tox/.tmp/package/1/flask_caching-2.3.0.tar.gz
py311: commands[0]> pytest -v --capture=tee-sys --tb=short --basetemp=/tmp/flask-caching/.tox/py311/tmp
========================================================= test session starts =========================================================
platform linux -- Python 3.11.10, pytest-8.2.0, pluggy-1.5.0 -- /tmp/flask-caching/.tox/py311/bin/python
cachedir: .tox/py311/.pytest_cache
rootdir: /tmp/flask-caching
configfile: setup.cfg
testpaths: tests
plugins: xprocess-1.0.2, asyncio-0.23.7
asyncio: mode=Mode.STRICT
collected 201 items                                                                                                                   

tests/test_backend_cache.py::TestSimpleCache::test_generic_get_dict PASSED                                                      [  0%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_set_get PASSED                                                       [  0%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_get_set PASSED                                                       [  1%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_get_many PASSED                                                      [  1%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_set_many PASSED                                                      [  2%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_add PASSED                                                           [  2%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_delete PASSED                                                        [  3%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_delete_many PASSED                                                   [  3%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_inc_dec PASSED                                                       [  4%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_true_false PASSED                                                    [  4%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_timeout PASSED                                                       [  5%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_has PASSED                                                           [  5%]
tests/test_backend_cache.py::TestSimpleCache::test_generic_get_bytes PASSED                                                     [  6%]
tests/test_backend_cache.py::TestSimpleCache::test_purge PASSED                                                                 [  6%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_get_dict PASSED                                                  [  7%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_set_get PASSED                                                   [  7%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_get_set PASSED                                                   [  8%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_get_many PASSED                                                  [  8%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_set_many PASSED                                                  [  9%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_add PASSED                                                       [  9%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_delete PASSED                                                    [ 10%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_delete_many PASSED                                               [ 10%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_inc_dec PASSED                                                   [ 11%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_true_false PASSED                                                [ 11%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_timeout PASSED                                                   [ 12%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_has PASSED                                                       [ 12%]
tests/test_backend_cache.py::TestFileSystemCache::test_generic_get_bytes PASSED                                                 [ 13%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_dict[None] SKIPPED (pytest-xprocess not installed.)               [ 13%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_dict[False] SKIPPED (pytest-xprocess not installed.)              [ 14%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_dict[True] SKIPPED (pytest-xprocess not installed.)               [ 14%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_dict[gen_key_prefix] SKIPPED (pytest-xprocess not installed.)     [ 15%]
tests/test_backend_cache.py::TestRedisCache::test_generic_set_get[None] SKIPPED (pytest-xprocess not installed.)                [ 15%]
tests/test_backend_cache.py::TestRedisCache::test_generic_set_get[False] SKIPPED (pytest-xprocess not installed.)               [ 16%]
tests/test_backend_cache.py::TestRedisCache::test_generic_set_get[True] SKIPPED (pytest-xprocess not installed.)                [ 16%]
tests/test_backend_cache.py::TestRedisCache::test_generic_set_get[gen_key_prefix] SKIPPED (pytest-xprocess not installed.)      [ 17%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_set[None] SKIPPED (pytest-xprocess not installed.)                [ 17%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_set[False] SKIPPED (pytest-xprocess not installed.)               [ 18%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_set[True] SKIPPED (pytest-xprocess not installed.)                [ 18%]
tests/test_backend_cache.py::TestRedisCache::test_generic_get_set[gen_key_prefix] SKIPPED (pytest-xprocess not installed.)      [ 19%]
[...]

Environment:

• Python version: 3.11.10
• Flask-Caching version: 494d498