Good news is that the tagging now seems to work

I find this a bit odd ?

Very odd... Where did this error appear? Do you have a link?

Well, I don't have a link. It was mentioned in some discussion that these URLs needed to be on the same host, so I thought Id give it a try and publish the package manually (with the change proposed in this PR) and that worked.

I tried to look at

https://packaging.python.org/specifications/core-metadata

but I did not really find anything there. But this documentation URL validation have changed in Poetry lately. However I found it quite unreasonable that the documentation can't be hosted somewhere else.

I am very confused... : D

Where did you see the error message? When uploading to PyPI? Uploading to PyPI with twine or Poetry? Did the error come from PyPI server?

This just appeared 20 minutes ago: pypa/twine#1073

That is likely our issue form PyPI's ticket tracker directly: pypi/warehouse#15628

The error seems to come from PyPI, see the action log below

https://github.com/mxcube/mxcubeweb/actions/runs/8344901441/job/22838474034

The upload was done by poetry publish, at this stage I'm not sure if its something that poetry is doing to the URL (I guess not) or if its PyPI

I think they messed up something on PyPI, looking at the error message:

he server could not comply with the request since it is either malformed or otherwise incorrect.<br/><br/>\n&#x27;&#x27; is not a valid url.

Seems to work now, closing this issue :)

Yes, the issue was this: pypi/warehouse#15628 (linked above as well)