Python RPM dependency generator does not support PEP 508?

[Michel Alexandre Salim]

Hi all,

Davide recently updated python-fixit, and the new version introduced an
ungated requirement on 'importlib-resources', which is only needed on
Python 3.6 and below; this caused an FTI as nothing satisfies that
dependency:

https://bugzilla.redhat.com/show_bug.cgi?id=2021229

To our surprise, patching requirements.txt to have

importlib-resources>=5.1.2; python_version <= '3.6'

per PEP 508 (which is a fix we can upstream) does not actually work.

cf: https://www.python.org/dev/peps/pep-0508/#examples

We're working around it by patching out this line completely, which
does work as expected, but:

1. should we support this conditional
2. where should we file this RFE?

Thanks,