[Distutils] Time for a setuptools_lite??

[Daniel Holth]

On Wed, Oct 21, 2015 at 5:52 PM David Cournapeau <cournape at gmail.com> wrote:

> On Wed, Oct 21, 2015 at 10:25 PM, Antoine Pitrou <solipsis at pitrou.net>
> wrote:
>
>> On Wed, 21 Oct 2015 21:41:35 +0100
>> Paul Moore <p.f.moore at gmail.com> wrote:
>> > On 21 October 2015 at 20:41, Chris Barker <chris.barker at noaa.gov>
>> wrote:
>> > > As I understand it, the current "API" that pip knows about is:
>> > >
>> > > "some subset of what setuptools provides"
>> > >
>> > > So my proposal is here is to provide a way for users to easily use
>> jsut that
>> > > subset.
>> >
>> >
>> https://pip.pypa.io/en/stable/reference/pip_install/#build-system-interface
>> >
>> > All you need to do is write a setup.py, which can do *anything you
>> > like*,
>>
>> Reading this, the CLI options which have to be implemented are
>> completely tied to setuptools' own view of the world.
>> `--single-version-externally-managed`? `--install-headers`? Why should
>> a random build system care about that gunk? What should it do with it?
>>
>
> I agree it is not ideal, but it is not *that* hard. Regarding
> `--single-version-externally-managed`, if you don't care about setuptools
> interoperability, I believe it is safe to just ignore the flag (or more
> exactly do like what distutils does, that is installed directly in
> site-packages, and make `--single-version-externally-managed` a no-op).
> install_headers, I am not sure how many projects depend on that. The only
> projects I know that install headers (numpy, etc...) are not using the
> setuptools mechanism.
>
> If that's deemed useful, I could write a simple implementation that does
> not use distutils/setuptools but support that interface as an example (I
> have something similar enough times that I unfortunately know the ropes :) )
>

Also, it's no longer necessary to implement 'setup.py install' at all; you
can just implement bdist_wheel and pip will go from there.

Of course if pip can beat us to a better interface that would be great too,
but a setup.py shim would be a fun little project that someone could do
alone.
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