flake8 ignores exclude configuration when used through pre-commit hooks

[merfolk]

Describe the bug
When sharpy-sc2's pre-commit hooks are installed, flake8 will ignore excludes configured in .flake8 file.

This is by design, and pre-commits exclude should be used instead.

Checked-in python files will be passed as positional arguments. flake8 will always lint explicitly passed arguments (flake8 --exclude has no effect). Instead use pre-commit’s exclude: ... regex to exclude files. pre-commit won’t ever pass untracked files to flake8 so excluding .git / .tox / etc. is unnecessary.

https://flake8.pycqa.org/en/latest/user/using-hooks.html

Expected behavior
Flake8 should work in similar way, whether launched with eg. py -m flake8 or by the pre-commit hooks (installed by pre-commit install).

Additional context

sharpy-sc2 repo already contains multiple config files with the same excludes.

1. .flake8
2. pyproject.toml for Black config
3. pytest.ini

Adding a fourth file with the same excluded directories would be... less than ideal.