Subject: [bug#68250] [PATCH v2] gnu: mpv: Fix pkgconfig file.

From: Hilton Chain <[email-masked]>
Date: Thu, 01 Feb 2024 13:01:59 +0800

Hi Maxim,

On Fri, 19 Jan 2024 10:05:41 +0800,
Maxim Cournoyer wrote:
>
> Hi,
>
> Hilton Chain <[email-masked]> writes:
>
> > This is a follow-up to ce7b2b57aa6da0ceace94ea5fb42392c7ff97d53.
> >
> > * gnu/packages/video.scm (mpv)[arguments]<#:phases>: Add 'fix-mpv.pc.
> >
> > Suggested-by: 宋文武 <[email-masked]>
> > Change-Id: I9826d5d6c957ca3022fa326aee111edb533f05bc
> > ---
> >  gnu/packages/video.scm | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
> > index e70aa5352e..10d46db38b 100644
> > --- a/gnu/packages/video.scm
> > +++ b/gnu/packages/video.scm
> > @@ -2365,7 +2365,13 @@ (define-public mpv
> >                ;; and passed as linker flags, but the order in which they are added
> >                ;; varies.  See <https://github.com/mpv-player/mpv/issues/7855>.
> >                ;; Set PYTHONHASHSEED as a workaround for deterministic results.
> > -              (setenv "PYTHONHASHSEED" "1"))))
> > +              (setenv "PYTHONHASHSEED" "1")))
> > +          ;; mpv.pc is generated by meson.  libmpv's headers don't actually
> > +          ;; require these dependencies so it's safe to remove these two fields.
> > +          (add-after 'install 'fix-mpv.pc
> > +            (lambda _
> > +              (substitute* (string-append #$output "/lib/pkgconfig/mpv.pc")
> > +                (("^(Requires|Libs)\\.private:.*") "")))))
> >        #:configure-flags
> >        #~(list "-Dlibmpv=true"
> >                "-Dcdda=enabled"
>
> I've just seen this, after pushing a hot fix as
> f3fdb4e041cb5740ba0b38b9ad017571f8414d33, which propagates all listed
> libraries in Requires.private.
>
> I suppose that someone wanting to build something statically from mpv
> would benefit from having the original mpv.pc file without
> modifications.
>
> Perhaps we can try it out for a bit, and if the propagation causes
> problems, we can fall-back to this change here?

Then we should follow the approach in v1 to add libmpv as a separate package.
I'll send v3 later.

Thanks