GNU bug report logs - #73898
MPV should not propagate all inputs

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Antero Mejr <mail <at> antr.me>
To: bug-guix <at> gnu.org
Subject: MPV should not propagate all inputs
Date: Sun, 20 Oct 2024 02:33:37 +0000

Currently, MPV propagates most of its inputs, which is not correct.

When MPV tries to propagate a different version of a dependency (like
ffmpeg) that is a different version what is currently installed, Guix
operations will fail.

The source code in video.scm says that the inputs are propagated so
pkg-config will work, but that is not a valid reason. The pkg-config
file should be patched so that pkg-config will work without unnecessary
propagated-inputs.

Message #8 received at 73898 <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Antero Mejr <mail <at> antr.me>
Cc: 73898 <at> debbugs.gnu.org
Subject: Re: bug#73898: MPV should not propagate all inputs
Date: Wed, 23 Oct 2024 21:52:39 +0900

Hi Antero,

Antero Mejr <mail <at> antr.me> writes:

> Currently, MPV propagates most of its inputs, which is not correct.
>
> When MPV tries to propagate a different version of a dependency (like
> ffmpeg) that is a different version what is currently installed, Guix
> operations will fail.
>
> The source code in video.scm says that the inputs are propagated so
> pkg-config will work, but that is not a valid reason. The pkg-config
> file should be patched so that pkg-config will work without unnecessary
> propagated-inputs.

Maybe we could have a mpv package that doesn't propagate anything, and a libmpv
that does, if there are any users (other packages) of mpv as a library?

-- 
Thanks,
Maxim

Message #11 received at 73898 <at> debbugs.gnu.org (full text, mbox):

From: Antero Mejr <mail <at> antr.me>
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: 73898 <at> debbugs.gnu.org
Subject: Re: bug#73898: MPV should not propagate all inputs
Date: Wed, 23 Oct 2024 16:53:49 +0000

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> writes:

> Maybe we could have a mpv package that doesn't propagate anything, and a libmpv
> that does, if there are any users (other packages) of mpv as a library?

There was already some discussion about that here:
https://issues.guix.gnu.org/68250

It seems like once the pkgconf stuff is merged, mpv can be built as a
shared library, move the propagated-inputs to inputs, and meson will
output the correct pkg-config file without breaking downstream
dependencies. Not sure though.

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