Use ipaddress instead of unmaintained py2-ipaddress

[nsoranzo]

Also build universal wheels.

Both will help the Galaxy under Python3 project.

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[nuwang]

@nsoranzo Thanks, this looks great! I guess the newer requirement syntax doesn't work on pypy yet, but we can fix that when it eventually does. I think the build failures on openstack and azure are unrelated, because we've run into a quota issue on them.

[nsoranzo]

Everything works on PyPI, this is how I build and upload my Python packages:

$ python setup.py sdist
$ python setup.py bdist_wheel
$ twine upload dist/*

You just need recent versions of pip, setuptools, twine and wheel.

[nuwang]

I was thinking about PyPy, as in the jit compiler - I saw that an earlier commit had a newer requirements syntax, which I assume you removed because of PyPy?

[nsoranzo]

Ah, sorry, I misread! The problem is not PyPy (that I know of), but old setuptools: the extras_require syntax is understood by setuptools >=18, while the PEP 508 syntax I initially used is understood only by setuptools >=36.2 . See https://hynek.me/articles/conditional-python-dependencies/ for more details.

It is also possible to support setuptools<18, if needed, with an ugly workaround as in https://gitlab.com/pycqa/flake8/blob/master/setup.py .

[nuwang]

That makes sense - thanks for the details. PEP508 looks really interesting!