Python and propagated inputs

[Ludovic Courtès]

address@hidden (宋文武) skribis:

>>> They're needed at runtime, and included in the pth file.
>>> But I'm not sure whether or not inputs for python should be
>>> native-inputs, I never cross build python modules for other
>>> architertures.
>>
>> If they’re used at run time, they’re not ‘native-inputs’.  (In practice
>> we cannot cross-compile Python stuff currently, so this is largely a
>> theoretical concern, but it doesn’t cost much to get it right.)
>>
>>> Should I put dnspython and idna into inputs, or propagated-inputs?
>>
>> If the installed code “import”s them, then they should be propagated.
> OK, done.  I'm fine with propagated them, but there are many python
> packages use inputs for runtime depends and rely on the pth file too.
>
> What's the current practice?
>
>
> Also, last dicussed at:
> <https://lists.gnu.org/archive/html/guix-devel/2016-04/msg01020.html>

AIUI, what Ricardo is saying in this message is that current practice is
to propagate inputs that are needed at run time, even though that sucks
in some ways.

Ludo’.