Upload to pypi is failing

[dkirkby]

The pypi upload command twine upload dist/* is failing with:

HTTPError: 400 Bad Request from https://upload.pypi.org/legacy/
Can't have direct dependency: desiutil@ https://github.com/desihub/desiutil/archive/refs/tags/3.4.2.tar.gz ; extra == "docs". See https://packaging.python.org/specifications/core-metadata for more information.

The offending lines are in setup.cfg:

[options.extras_require]
docs =
    sphinx-astropy
    desiutil @ https://github.com/desihub/desiutil/archive/refs/tags/3.4.2.tar.gz
    desimodel @ https://github.com/desihub/desimodel/archive/refs/tags/0.19.1.tar.gz

After some iteration with @weaverba137 on slack, we can probably just remove those 2 lines with github URLs.

See here for more on the error.

[weaverba137]

See also #138.

[weaverba137]

Also note that, while I was successfully able to build the .tar.gz and .whl files for specsim (at NERSC with setuptools/69.5.1) more recent versions of setuptools (I tried setuptools/75.6.0) fail to even do that.

So we are close to losing the ability to even build the package for distribution, prior to uploading to PyPI.