publish purepython/universal wheel?

[jku]

Long story short

CD pipeline does not publish a pure python version on PyPI.

I don't have a pressing need for this but we're investigating whether we can make some sigstore-python functionality available as a pure python module and this dependency came up as one of the issues preventing that.

Expected behaviour

Since multidict can be built as a pure Python module I expected a wheel to be available in PyPI as well

Actual behaviour

cd-cd.yml does not seem to build a purepython wheel, but the ability is there in the build system itself.

Details

I can provide a PR but I admit I haven't tested it (CD pipelines being a bit tricky to test). The changes needed seem to be:

• add a new build matrix variable noextensions (default 0) , and add a new build into the build matrix that uses noextensions: 1
• based on a matrix variable set MULTIDICT_NO_EXTENSIONS during the build
• fix bug in MULTIDICT_NO_EXTENSIONS handling so that "MULTIDICT_NO_EXTENSIONS=0" actually uses extensions

[jku]

I can provide a PR but I admit I haven't tested it (CD pipelines being a bit tricky to test)

Looking at the workflow again, it does trigger for PRs so it will get tested. Let me know if you'd like a PR for this.

[webknjaz]

Sounds reasonable. I think we do this in some other projects.
FWIW I've been meaning to refactor packaging to turn that build feature flag into something standard on the PEP 517 level. I'll try to remember this case when I get to it.
As for the CI, the tests currently don't run against wheels about to be published. This is something I have in mind too.

[webknjaz]

7ba0e72 implemented this in CI. The py3-any wheel will be published with the next release.