Re: [PATCH 1/2] gnu: Add python-pafy.

[ng0 <ng0@we.make.ritual.n0.is>]

Hartmut Goebel <h.goebel@crazy-compilers.com> writes:

> Am 04.11.2016 um 19:18 schrieb ng0:
>> Hartmut Goebel <h.goebel@crazy-compilers.com> writes:
>>
>>> Am 02.11.2016 um 11:40 schrieb ng0:
>>>> +    (inputs
>>>> +     `(("youtube-dl" ,youtube-dl)))
>>> This needs to be a propagated input since python-pafy is a package itself.
>> Can you be more specific? I know now that other python inputs
>> should be propagated, but why non-python software? Or is
>> youtube-dl just another python software?
>
> Oh, sorry, I thought you know that youtube-dl is a python tool. (I not
> it since I'm using it myself).

Ah, thanks. I use it, but I have forgotten which language it is
written in as it is not relevant for me.

>
> Basically you were right: tools do not need to be propagated (at least
> as far as I understood).
>
> But the reason this needs to be propagated is: it is not used as a tool
> (via some system-call or such), but the python package is imported, see
> <https://github.com/mps-youtube/pafy/blob/develop/pafy/backend_youtube_dl.py#L11>.
> I have to admit that this is not obvious.

Ok, thanks for the explanation. I will add this with a comment to
a new revision of the patch series.