[Distutils] Provisionally accepting PEP 517's declarative build system interface

Donald Stufft donald at stufft.io
Fri Jun 2 13:02:00 EDT 2017

> On Jun 2, 2017, at 12:39 PM, Paul Moore <p.f.moore at gmail.com> wrote:
> On 2 June 2017 at 16:27, Donald Stufft <donald at stufft.io <mailto:donald at stufft.io>> wrote:
>> So my preference is that everything goes through the sdist step as I think
>> that is most likely to provide consistent builds everywhere both from a VCS
>> checkout and from a sdist that was released to PyPI.
> Agreed. That's the ideal workflow. The only reason we don't do it now
> is because... well, I'm not quite sure. I think it's to do with things
> like setuptools_scm not generating suitable "temporary version
> numbers" to allow us to work properly with installs that assume that
> name/version uniquely identifies the code.

I’m pretty sure the only reason we don’t do it now is because nobody has had the time to make it happen yet. The problems before weren’t from going via sdist, they were from trying to modify our copy tree implementation to filter out .tox, .git, etc. I don’t think we’ve ever tried going via sdist (other than there is an open PR for it, but it ended up stalling https://github.com/pypa/pip/pull/3722 <https://github.com/pypa/pip/pull/3722>). Essentially, volunteer time is finite :(

Donald Stufft

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