[Distutils] PEP 517 again

[xoviat]

Nathaniel:

Pip requires egg_info to discover dependencies of source distributions so
that it can build wheels all at once after downloading the requirements. I
need to move pip off of egg_info as soon as possible and dist_info is
required to do that.

2017-09-03 21:00 GMT-05:00 Nathaniel Smith <njs at pobox.com>:

> On Sun, Sep 3, 2017 at 11:14 AM, xoviat <xoviat at gmail.com> wrote:
> > Just an update for everyone here:
> >
> > 1. We're currently waiting on the implementation of the 'dist_info"
> command
> > in the wheel project.
> > 2. Once that is done we can switch pip over to reading dist-info rather
> than
> > egg_info.
> > 3. Then we can move the backend over to setuptools. Because Jacob has a
> much
> > more efficient release system than pip, I anticipate having a release of
> > setuptools first and then we can switch pip over to requiring a newer
> > setuptools via PEP 518.
>
> I don't think pip actually has any use for the PEP 517
> prepare_wheel_metadata hook right now though? Historically 'setup.py
> egg-info' was needed to kluge around unwanted behavior in 'setup.py
> install', but with a PEP 517 backend that's irrelevant because
> 'setup.py install' is never used. And in the future when pip has a
> real resolver, then prepare_wheel_metadata should allow some
> optimizations. But right now, prepare_wheel_metadata is completely
> useless AFAIK.
>
> So why is 'setup.py dist_info' a blocker for things?
>
> -n
>
> --
> Nathaniel J. Smith -- https://vorpus.org
>
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