Pin flake version in dev dependencies
Trying to address the issue in PR #390
I am having issues with reproducing the error on my machine. Can maybe @firefly-cpp or @zStupan test pinning the flake and pycodestyle dependency versions?
@GregaVrbancic I'm struggling to even get pipenv working on Ubuntu 22.04, It throws errors when trying to run pip install. I get the error AttributeError: module 'collections' has no attribute 'MutableMapping', which is related to setuptools (https://stackoverflow.com/questions/69512672/getting-attributeerror-module-collections-has-no-attribute-mutablemapping-w). But updating still doesn't fix it. I think it's about time we switch to poetry.
Problems with flake are fixed by #395. This PR can be closed.