Mark Meyer <mark@ofosos.org> writes:

> Hi list,
> please consider the attached patch, it adds OggVorbis support to moc.
>
> Cheers, Mark
>
> From 9517f2beea0ab4199ad5d558bfcab82a5df713bd Mon Sep 17 00:00:00 2001
> From: Mark Meyer <mark@ofosos.org>
> Date: Mon, 3 Apr 2017 21:29:25 +0200
> Subject: [PATCH] 2017-04-03 Mark Meyer <mark@ofosos.org>
>
> * gnu/packages/music.scm (moc): Add OggVorbis support.
> ---
>  gnu/packages/music.scm | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
> index 2f70945c6..8f3c96865 100644
> --- a/gnu/packages/music.scm
> +++ b/gnu/packages/music.scm
> @@ -2236,6 +2236,8 @@ with a number of bugfixes and changes to improve IT playback.")
>         ("libmodplug" ,libmodplug)
>         ("libmpcdec" ,libmpcdec)
>         ("libmad" ,libmad)
> +       ("libogg" ,libogg)
> +       ("libvorbis" ,libvorbis)
>         ("ncurses" ,ncurses)
>         ("openssl" ,openssl)
>         ("sasl" ,cyrus-sasl)

It seems that Ogg Vorbis support already works in this package, probably
because of ffmpeg support. Do Ogg Vorbis files not work for you without
this patch?