Silently fails to do anything

[jaraco]

Using pytest 7.3.1, I have pytest-flake8 installed pinned to flake8<5, but no flake8 tests are discovered/run. This project has eroded to the point of being unusable.

Now I'm finding that flakes are seeping into the code because they're not caught by tests that were meant to protect them, which is worse than not having the protections at all.