flake8 5.0.0 was just released, and flake8-pyi crashes if run with the new version of flake8.
In the short term, we should maybe pin the required version of flake8 in our setup.py to <5.0.0 and do a hotfix release.
In order to become compatible with flake8 5.0.0, we'll probably need to either address #183 or just change the monkey-patching of flake8 that we do.
Thoughts?