[Distutils] Best way to handle packaging a project that only applies to certain versions of Python

[Thomas Kluyver]

There is also the 'python requires' metadata, which can now be provided
via setuptools, but I think pip 8.2 needs to be released before that is
respected.


On Tue, Aug 30, 2016, at 01:08 AM, Daniel Holth wrote:
> Let's say you have different code for python 3.3 and python 3.4+. Tag
> one wheel py33-none-any and the second py34-none-any. The second wheel
> is preferred on python 3.4 and above, but ignored by 3.3. The py3 tag
> wouldn't work well here.
> Order of preference on 3.5 is: ('py35', 'none', 'any'), ('py3',
> 'none', 'any'), ('py34', 'none', 'any'), ('py33', 'none', 'any'),
> ('py32', 'none', 'any'), ('py31', 'none', 'any'), ('py30',
> 'none', 'any')
> Enscons would let you control the wheel tag directly but doesn't yet
> let you build multiple wheels with a single invocation.
>
> On Mon, Aug 29, 2016, 19:46 Donald Stufft <donald at stufft.io> wrote:
>>
>>> On Aug 29, 2016, at 7:34 PM, Brett Cannon <brett at python.org> wrote:
>>>
>>> Someone has asked that I do a new release of importlib that includes
>>> a LICENSE file on PyPI: https://pypi.org/project/importlib/.
>>> Historically I have had the setup.py simply not include any Python
>>> code when built on versions of Python that include importlib in the
>>> stdlib itself:
>>> https://github.com/brettcannon/importlib/blob/master/setup.py .
>>>
>>> But now I would like to do a wheel. Is there some way I'm not
>>> thinking of to have a wheel that will leave out code or not install
>>> itself if a certain version of Python is used? Or will the user have
>>> to specify a proper Python requirement in their requirements.txt to
>>> get that kind of experience?
>>> _______________________________________________
>>> Distutils-SIG maillist  -  Distutils-SIG at python.org
>>> https://mail.python.org/mailman/listinfo/distutils-sig
>>
>> If your setup.py produces different output on different versions of
>> Python, you’ll need multiple wheels.
>>
>> —
>>
>> Donald Stufft
>> _______________________________________________
>>  Distutils-SIG maillist  - Distutils-SIG at python.org
>> https://mail.python.org/mailman/listinfo/distutils-sig
> _________________________________________________
> Distutils-SIG maillist  - Distutils-SIG at python.org
> https://mail.python.org/mailman/listinfo/distutils-sig
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