https://github.com/python-cmd2/cmd2/blob/2.4.2/setup.py#L47 https://github.com/marcelotduarte/cx_Freeze/blob/v6.11.1/setup.cfg#L45 https://github.com/pallets/flask/blob/2.1.3/setup.py#L11 https://github.com/Python-Markdown/markdown/blob/master/setup.py#L77 https://github.com/jaraco/path/blob/v16.4.0/setup.cfg#L23 https://github.com/pytest-dev/pytest/blob/7.1.2/setup.cfg#L52 https://github.com/sphinx-doc/sphinx/blob/v5.1.1/setup.py#L30 https://github.com/jwodder/versioningit/blob/v2.0.0/setup.cfg#L54 The only two packages that still depends on it are: https://github.com/rst2pdf/rst2pdf/blob/0.99/setup.py#L32 https://github.com/jaraco/pytest-checkdocs/blob/v2.7.1/setup.cfg#L23