pep517.build warns about missing author_email field #73
Description
I ported a very old package to Python 3, of which I know the author, but not his email address. Also, I'd think he does not want to get involved any more with this 16 year old package.
In order to create a package I followed Hynek's guide at
https://hynek.me/articles/sharing-your-labor-of-love-pypi-quick-and-dirty/
My setup.py contains an author, but no author_email field and me as maintainer.
When I do a python -m pep517.build . I get the following warning:
warning: Check: missing meta-data: if 'author' supplied, 'author_email' must be supplied too
There was a quick discussion over at
https://discuss.python.org/t/which-fields-are-required-for-a-setup-py-especially-is-author-required/2705/2
with different proposed solutions.
I created a test package and uploaded it at test.pypi.org with the author field, but without an author_email field - looks totally valid to me:
https://test.pypi.org/project/Products.ZopeTree/2.0.2.dev0/
Where is the information coming from that author_email must be supplied - while it need not as it seems.
Is it possible to drop this warning? Or change its wording to "should be provided"?
If it is a "must" requirement I'd expect the build to fail.