cfg to pyrpoject toml - didn't work for me? https://pypi.org/project/pyproject-migrator/
setup.py to cfg - works if no "code" in value fields https://pypi.org/project/setup-py-upgrade/
pyproject.toml back to setup.py (e.g. for native code compilation) https://gist.github.com/adamghill/8a96311b5cf1790c72a0b825ffe4f6d2
setup.* to pyproject.toml setuptools-pyproject-migration
poetry deps to 508/621 https://github.com/abn/pep621-project-dependencies/tree/master