Comment 54 for bug 1991606

I can imagine lots of things, and most of them do not qualify for SRUing :)

The original bug report suggests that having these packages with non-PEP440 versions *present* on the system will break newer setuptools. But none of the test cases so far have demonstrated this, they've only demonstrated that if you try to *use* these system packages with the newer setuptools, it doesn't work.