Re: [PATCH] gnu: Add audacity.

[Ludovic Courtès]

address@hidden (Taylan Ulrich "Bayırlı/Kammer") skribis:

> address@hidden (Ludovic Courtès) writes:
>
>>> - It tries to find libid3tag and libmad via pkg-config even though they
>>>   don't install .pc files.  Perhaps we can generate them manually in the
>>>   install phase of those packages, or maybe they just don't get
>>>   installed due to a bug.  Perhaps they just need 'pkg-config' as an
>>>   input?  I might try that next.
>>
>> That would be surprising.  Perhaps the Audacity developers were using a
>> distro that adds .pc files for these two libs?
>
> Apparently Debian indeed adds .pc files.  I added patches to them to do
> the same.

Sorry for not being clear: I think we should avoid diverging from
upstream in this way, especially if there’s just one package that makes
the incorrect assumption.  So I would rather not add those .pc files.

If Audacity uses Autoconf and pkg.m4, I guess you could just pass
PKG_CONFIG=true as a configure flag, or {LIBID3TAG,LIBMAD}_{CFLAGS,LIBS}
and it will just work.

>>> - Audacity apparently uses PortAudio version 19, but the in-tree one has
>>>   a function which the upstream one doesn't.  It would be strange if
>>>   they had an API change without changing the version, so no idea what's
>>>   going on there.
>>
>> Could you try to find out what the story of this function is?  It would
>> be best to avoid using the bundled PortAudio.
>
> Apparently it's from a patch that has been waiting forever to be merged
> into PortAudio and it's questionable whether it ever will.  I applied it
> to our PortAudio package.

OK.

(I’d normally recommend relying on upstream but in this case, if the
choice is between not having Audacity and adding this patch, I think the
latter makes more sense.)

>>> - The test suite fails due to some missing portaudio.h file.  I didn't
>>>   come far trying to figure out why this happens so I just disabled the
>>>   test suite.
>>
>> Perhaps that problem would magically vanish when using system’s
>> PortAudio because headers would be in $CPATH.
>
> Indeed.  Sadly the test suite seems to have other issues, and I've been
> told it isn't "well exercised" so I disabled it for now.  (FWIW it also
> fails in the upcoming Audacity 2.1.0 which is now entering RC2 phase and
> will be released soon.)

OK.

>> The rest of the patch looks good to me; just the PortAudio issue needs
>> to be resolved.
>
> Updated patches below.
>
> Note also it's in audacity.scm now and not audio.scm, because it depends
> on ffmpeg, which is in video.scm, which now imports audio.scm, so
> audio.scm cannot import video.scm.

It actually can, but it’s fine (and safer) the way you propose.  :-)

> We might want to just wait for 2.1.0 to be released by the way, since it
> should be out in a couple days.  The FFmpeg dynamic loading and test
> suite issues aren't resolved, so the only difference will be the
> version; feel free to review this patch as if it were for 2.1.0.

Your call!

> From 3853b807f69fbd4b0cfe8116cc0d934c941df6aa Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Taylan=20Ulrich=20Bay=C4=B1rl=C4=B1/Kammer?=
>  <address@hidden>
> Date: Sun, 1 Mar 2015 21:52:23 +0100
> Subject: [PATCH 1/3] gnu: mp3: Add .pc files to libmad and libid3tag.
>
> * gnu/packages/mp3.scm (libmad, libid3tag): Add .pc files to installations.
> * gnu/packages/patches/libid3tag-add-pc-file.patch: New file.
> * gnu/packages/patches/libmad-add-pc-file.patch: New file.
> * gnu-system.am (dist_patch_DATA): Add them.

Rather no.

> From fe095e3aebcaaa9e88587610832db3f65f7ec015 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Taylan=20Ulrich=20Bay=C4=B1rl=C4=B1/Kammer?=
>  <address@hidden>
> Date: Mon, 2 Mar 2015 01:06:35 +0100
> Subject: [PATCH 2/3] gnu: portaudio: Patch for Audacity compatibility.
>
> * gnu/packages/audio.scm (portaudio): Add a patch for Audacity compatibility.
> * gnu/packages/patches/portaudio-audacity-compat.patch: New file.
> * gnu-system.am (dist_patch_DATA): Add it.

[...]

> +++ b/gnu/packages/patches/portaudio-audacity-compat.patch
> @@ -0,0 +1,322 @@
> +Description: Add features needed to make portmixer work with audacity.
> +Author: Audacity Team
> +Last-Update: 2011-12-07

Could you add a link to PortAudio’s bug tracker or list?

Other than that OK.

> From b14e4eb8e276a2dd98c189c1edd18b7cc57dcb52 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Taylan=20Ulrich=20Bay=C4=B1rl=C4=B1/Kammer?=
>  <address@hidden>
> Date: Fri, 20 Feb 2015 21:52:21 +0100
> Subject: [PATCH 3/3] gnu: Add audacity.
>
> * gnu/packages/audacity.scm: New file.
> * gnu-system.am (GNU_SYSTEM_MODULES): Add it.
> * gnu/packages/patches/audacity-fix-ffmpeg-binding.patch: New file.
> * gnu-system.am (dist_patch_DATA): Add it.

LGTM!

Apologies for the extra work.

Thank you!

Ludo’.