From mboxrd@z Thu Jan  1 00:00:00 1970
From: Federico Beffa <beffa@ieee.org>
Subject: Re: [PATCH] Add python-statsmodels.
Date: Mon, 19 Oct 2015 18:15:54 +0200
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To: =?UTF-8?Q?Ludovic_Court=C3=A8s?= <ludo@gnu.org>
Cc: Guix-devel <guix-devel@gnu.org>

ludo@gnu.org (Ludovic Court=C3=A8s) writes:

> Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> skribis:
>> +         (add-after 'unpack 'set-matplotlib-backend-to-agg
>> +          (lambda _
>> +            ;; Set the matplotlib backend to Agg to avoid problems usin=
g the
>> +            ;; GTK backend without a display.
>> +            (substitute* (find-files "statsmodels/graphics/tests" "\\.p=
y")
>> +              (("import matplotlib\\.pyplot as plt" line)
>> +               (string-append "import matplotlib;matplotlib.use('Agg');=
"
>> +                              line)))
>
> This looks good.  Should we eventually change Matplotlib itself to use
> this back-end by default?  What=E2=80=99s at stake exactly?

I don't think so. This back-end is only usable to produce files, it
can't be used for interactive sessions (which is the key appeal of the
numpy/scipy/matplotlib work-flow over C/C++). IMO we should switch to
the TkInter back-end which is part of the standard Python Library. It
was not available in our python when I did package matplotlib.

Regards,
Fede