[bug#47214] [core-updates] gnu: python: Remove unnecessary files

[Ludovic Courtès]

Hi Julien,

Julien Lepiller <julien@lepiller.eu> skribis:

> Le Wed, 17 Mar 2021 13:41:02 +0100,
> Julien Lepiller <julien@lepiller.eu> a écrit :
>
>> Hi Guix!
>> 
>> this patch (going to core-updates) removes files from the output of
>> python2 and python3, in an attempt to save some space. First, I
>> noticed that python3 shipped windows binaries in its source
>> distribution and installs them to the output, in
>> lib/python3.8/distutils/command/*.exe,
>> lib/python3.8/site-packages/*.exe and
>> lib/python3.8/site-packages/pip/_vendor/distlib/*.exe. I remove them
>> from the snippet, so they should not be installed anymore.
>> 
>> I also noticed that python installs files that were built during the
>> test phase, so I remove them, but we need to check they are not
>> actually needed. Other distros ship them in a separate package, so
>> maybe we could have a separate test output if this is causing issues?
>> 
>> I haven't yet tested the patch, because it needs to rebuild part of
>> the bootstrap chain. I'll report progress and update my patch
>> depending on the results!
>
> I discovered other .exe in python3, so this updated patch deletes them.
> Since I modify the python from commencement.scm by changing a phase in
> python-2.7, I decided to also change the definition there to remove the
> offending files.

Woow, good catch.

> From 0d2d9a32cbbf24eadf74271b2fb1304b7a72d281 Mon Sep 17 00:00:00 2001
> From: Julien Lepiller <julien@lepiller.eu>
> Date: Wed, 17 Mar 2021 13:33:22 +0100
> Subject: [PATCH 1/2] gnu: python: Remove unnecessary files.
>
> * gnu/packages/python.scm (python2)[arguments]: Remove files built
> during the test phase.
> (python3)[arguments]: Also remove windows binaries shipped with the
> sources.

Unless it causes bootstrapping issues, I recommend removing those files
from a snippet so that ‘guix build -S python’ returns the cleaned-up
source.

WDYT?

Thanks,
Ludo’.