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

[Julien Lepiller]

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.

I managed to build up to python-3.9 without any issue, but haven't
tested building more than a handful of python packages.

0001-gnu-python-Remove-unnecessary-files.patch
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