From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH 2/4] gnu: Add xcffib
Date: Wed, 17 Dec 2014 10:01:43 +0100
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	(Federico Beffa's message of "Tue, 16 Dec 2014 18:17:38 +0100")
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To: Federico Beffa <beffa@ieee.org>
Cc: Guix-devel <guix-devel@gnu.org>

Federico Beffa <beffa@ieee.org> skribis:

> On Mon, Dec 15, 2014 at 11:16 PM, Ludovic Court=C3=A8s <ludo@gnu.org> wro=
te:
>>> +    (propagated-inputs
>>> +     `(("python-cffi" ,python-cffi)))
>>
>> Please add a comment saying why this is propagated.
>
> The reason is that I want the package to inherit the propagated inputs
> from 'python-cffi' as the latter requires 'python-pycparser' at run
> time. If I don't make python-cffi a propagated-input, but a normal
> input, I need to copy the propagated-inputs from that package and
> (re-) make them propagated-inputs of python-xcffib as well.

Oh, I see.  But that=E2=80=99s basically because xcffib does =E2=80=9Cimpor=
t cffi=E2=80=9D or
something like that, right?

In that case I would just add a comment saying that, unless you really
think it=E2=80=99s obvious (it wasn=E2=80=99t to me, initially.)

> A similar reason applier to python-xcffib in python-cairocffi and to
> pygobject + python-cairocffi + gobject-introspection + pathon-pycairo
> in python-matplotlib.
>
> Is that OK?

Yes.  Thanks for explaining!

Ludo=E2=80=99.