Re: [Distutils] Adding Provides-Extra as an edit to PEP 345

Given that PEP 345 is already in 'Accepted' state, I'm not sure we can just merge it in. We might need to create a new PEP which extends PEP 345 and adds the feature (it likely needs to bump the 'Metadata-Version', too).

I would have thought so too, but then I downloaded 16,984 of the newest sdists hosted on pypi, parsed their PKG-INFO or METADATA files, and discovered adoption is quite low. Also, it is not Final.

'Metadata-Version: 1.0': 15384, 'Metadata-Version: 1.02': 1, 'Metadata-Version: 1.1': 1383, 'Metadata-Version: 1.2': 7,