Pytest doen't rewrite conftest plugins

[Tusenka]

As per discussed:

I try to run pytest rewriting for custom plugins. However it doesn't load a conftest plugin at the rewrting stage.

Example:

https://github.com/Tusenka/pytest/tree/disable_assertion_rewriting_external_modules/testing/example_scripts/rewrite

Expected result:

It sees the conftest plugin "some_plugin "for rewritng.

Result:

It doesn't see conftest plugins:

Result of provided plugins:
['pytest', 'zope.interface', 'idna', 'anyio', 'sniffio', 'filelock', 'cachetools', 'incremental', 'greenlet', 'pluggy', 'hypothesis', 'Automat', 'wheel', 'virtualenv', 'coverage', 'pip', 'distlib', 'mock', 'pre_commit', 'typing_extensions', 'elementpath', 'pytest-twisted', 'PyYAML', 'pyproject-api', 'identify', 'colorama', 'urllib3', 'hyperlink', 'Pygments', 'sortedcontainers', 'constantly', 'nodeenv', 'xmlschema', 'setuptools', 'attrs', 'requests', 'pytest', 'exceptiongroup', 'decorator', 'platformdirs', 'packaging', 'charset-normalizer', 'cfgv', 'Twisted', 'certifi', 'chardet', 'tox', 'argcomplete', 'iniconfig', 'jaraco.collections', 'zipp', 'typeguard', 'wheel', 'importlib_metadata', 'jaraco.text', 'jaraco.context', 'autocommand', 'tomli', 'typing_extensions', 'more-itertools', 'jaraco.functools', 'packaging', 'platformdirs', 'inflect', 'backports.tarfile']

`

pytest/src/_pytest/config/__init__.py

Line 1293 in 9e9633d

def _mark_plugins_for_rewrite(

Pip info:

anyio 4.9.0
argcomplete 3.6.2
attrs 25.3.0
Automat 25.4.16
cachetools 5.5.2
certifi 2025.4.26
cfgv 3.4.0
chardet 5.2.0
charset-normalizer 3.4.2
colorama 0.4.6
constantly 23.10.4
coverage 7.8.0
decorator 5.2.1
distlib 0.3.9
elementpath 5.0.0
exceptiongroup 1.3.0
filelock 3.18.0
greenlet 3.2.2
hyperlink 21.0.0
hypothesis 6.131.9
identify 2.6.12
idna 3.10
incremental 24.7.2
iniconfig 2.1.0
mock 5.2.0
nodeenv 1.9.1
packaging 25.0
pip 25.0.1
platformdirs 4.3.8
pluggy 1.5.0
pre_commit 4.2.0
Pygments 2.19.1
pyproject-api 1.9.1
pytest 8.5.0.dev32+g1d5a61269.d20250613 /home/cas12/PycharmProjects/pytest-play
pytest-twisted 1.14.3
PyYAML 6.0.2
requests 2.32.3
setuptools 78.1.0
sniffio 1.3.1
sortedcontainers 2.4.0
tox 4.26.0
Twisted 24.11.0
typing_extensions 4.13.2
urllib3 2.4.0
virtualenv 20.31.2
wheel 0.45.1
xmlschema 4.0.1
zope.interface 7.2

Pytest and OS:

• a detailed description of the bug or problem you are having
• output of pip list from the virtual environment you are using
• pytest and operating system versions
• minimal example if possible