pytest won't run root conftest.py's pytest_configure in special circumstances

[Redoubts]

Consider the following project: https://github.com/Redoubts/_pytest_bug_report

There's a root level conftest.py, and 3 plugins (two loaded in the conftest, and a third loaded by plugin 2). All define a pytest_configure in some way.

with platform darwin -- Python 3.11.4, pytest-7.4.0, pluggy-1.0.0, we see

% pytest test1.py
mypackage.plugin2 Configured
mypackage.plugin3 Configured
conftest Configured
mypackage.plugin Configured

Which is somewhat expected, each pytest_configure gets called.

If you update pluggy to 1.2+, you see

% pytest test1.py           
mypackage.plugin2 Configured
mypackage.plugin3 Configured
mypackage.plugin Configured
mypackage.plugin3 Configured
============================================================================================ test session starts =============================================================================================
platform darwin -- Python 3.11.4, pytest-7.4.0, pluggy-1.2.0
...

Where the third plugin's pytest_configure is called twice, but the root pytest_configure is never called.

I think this is more specifically due to mypackage/plugin3.py's @pytest.hookimpl wrapper. Maybe it's ill advised to do that, but I found this bizarre scenario when testing package updates in a much larger codebase.

[RonnyPfannschmidt]

This looks like a bug on the pluggy/pytest side

[Redoubts]

solved in pluggy