audacious: migrate to meson build system, refactor

Separate the derivation in `audacious` and `audacious-plugins`. Since
one derivation depends on the other, we first build `audacious` without
the `audacious-plugins`, them we build `audacious-plugins` and finally
we build the final version of `audacious`.

Also, add myself as maintainer.

pkgs/applications/audio/audacious/0001-Set-plugindir-to-PREFIX-lib-audacious.patch

···
+From b64b03be9edf23a80fce0c76de61ffff0914ddce Mon Sep 17 00:00:00 2001
+From: Thiago Kenji Okada <[e-mail]>
+Date: Mon, 8 Aug 2022 10:28:33 +0100
+Subject: [PATCH] Set plugindir to $PREFIX/lib/audacious
+
+---
+ meson.build | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index 3f7996f72..ab09d6476 100644
+--- a/meson.build
++++ b/meson.build
+@@ -160,7 +160,7 @@ if (cxx.has_header('libintl.h'))
+ endif
+ 
+ 
+-install_plugindir = audacious_dep.get_variable(pkgconfig: 'plugin_dir')
++install_plugindir = join_paths(get_option('prefix'), 'lib/audacious')
+ 
+ 
+ conf.set_quoted('INSTALL_PLUGINDIR', install_plugindir)
+-- 
+2.36.0
+

pkgs/applications/audio/audacious/default.nix

···
-{
-  mkDerivation, lib, fetchurl, fetchpatch,
-  gettext, pkg-config,
-  qtbase,
-  alsa-lib, curl, faad2, ffmpeg, flac, fluidsynth, gdk-pixbuf, lame, libbs2b,
-  libcddb, libcdio, libcdio-paranoia, libcue, libjack2, libmad, libmms, libmodplug,
-  libmowgli, libnotify, libogg, libpulseaudio, libsamplerate, libsidplayfp,
-  libsndfile, libvorbis, libxml2, lirc, mpg123, neon, qtmultimedia, soxr,
-  wavpack, libopenmpt
+{ lib
+, stdenv
+, audacious-plugins
+, fetchurl
+, gettext
+, meson
+, ninja
+, pkg-config
+, qtbase
+, wrapQtAppsHook
 }:
 
-mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "audacious";
   version = "4.2";
 
···
     url = "http://distfiles.audacious-media-player.org/audacious-${version}.tar.bz2";
     sha256 = "sha256-/rME5HCkgf4rPEyhycs7I+wmJUDBLQ0ebCKl62JeBLM=";
   };
-  pluginsSrc = fetchurl {
-    url = "http://distfiles.audacious-media-player.org/audacious-plugins-${version}.tar.bz2";
-    sha256 = "sha256-b6D2nDoQQeuHfDcQlROrSioKVqd9nowToVgc8UOaQX8=";
-  };
 
-  nativeBuildInputs = [ gettext pkg-config ];
+  nativeBuildInputs = [
+    gettext
+    meson
+    ninja
+    pkg-config
+    wrapQtAppsHook
+  ];
 
   buildInputs = [
-    # Core dependencies
     qtbase
-
-    # Plugin dependencies
-    alsa-lib curl faad2 ffmpeg flac fluidsynth gdk-pixbuf lame libbs2b libcddb
-    libcdio libcdio-paranoia libcue libjack2 libmad libmms libmodplug libmowgli
-    libnotify libogg libpulseaudio libsamplerate libsidplayfp libsndfile
-    libvorbis libxml2 lirc mpg123 neon qtmultimedia soxr wavpack
-    libopenmpt
   ];
 
-  configureFlags = [ "--disable-gtk" ];
+  mesonFlags = [
+    "-Dgtk=false"
+    "-Dbuildstamp=NixOS"
+  ];
 
-  # Here we build both audacious and audacious-plugins in one
-  # derivation, since they really expect to be in the same prefix.
-  # This is slighly tricky.
-  builder = builtins.toFile "builder.sh" ''
-    # First build audacious.
-    (
-      source $stdenv/setup
-      genericBuild
-    )
-    # Then build the plugins.
-    (
-      nativeBuildInputs="$out $nativeBuildInputs" # to find audacious
-      source $stdenv/setup
-      rm -rfv audacious-*
-      src=$pluginsSrc
-      genericBuild
-    )
+  postInstall = lib.optionalString (audacious-plugins != null) ''
+    ln -s ${audacious-plugins}/lib/audacious $out/lib
   '';
 
   meta = with lib; {
-    description = "Audio player";
+    description = "A lightweight and versatile audio player";
     homepage = "https://audacious-media-player.org/";
-    maintainers = with maintainers; [ eelco ramkromberg ttuegel ];
+    maintainers = with maintainers; [ eelco ramkromberg ttuegel thiagokokada ];
     platforms = with platforms; linux;
     license = with licenses; [
-      bsd2 bsd3 #https://github.com/audacious-media-player/audacious/blob/master/COPYING
-      gpl2 gpl3 lgpl2Plus #http://redmine.audacious-media-player.org/issues/46
+      bsd2
+      bsd3 #https://github.com/audacious-media-player/audacious/blob/master/COPYING
+      gpl2
+      gpl3
+      lgpl2Plus #http://redmine.audacious-media-player.org/issues/46
     ];
   };
 }

pkgs/applications/audio/audacious/plugins.nix

···
+{ stdenv
+, fetchurl
+, alsa-lib
+, audacious
+, curl
+, faad2
+, ffmpeg
+, flac
+, fluidsynth
+, gdk-pixbuf
+, gettext
+, lame
+, libbs2b
+, libcddb
+, libcdio
+, libcdio-paranoia
+, libcue
+, libjack2
+, libmad
+, libmms
+, libmodplug
+, libmowgli
+, libnotify
+, libogg
+, libopenmpt
+, libpulseaudio
+, libsamplerate
+, libsidplayfp
+, libsndfile
+, libvorbis
+, libxml2
+, lirc
+, meson
+, mpg123
+, neon
+, ninja
+, pkg-config
+, qtbase
+, qtmultimedia
+, soxr
+, wavpack
+}:
+
+stdenv.mkDerivation rec {
+  pname = "audacious-plugins";
+  version = "4.2";
+
+  src = fetchurl {
+    url = "http://distfiles.audacious-media-player.org/audacious-plugins-${version}.tar.bz2";
+    sha256 = "sha256-b6D2nDoQQeuHfDcQlROrSioKVqd9nowToVgc8UOaQX8=";
+  };
+
+  patches = [ ./0001-Set-plugindir-to-PREFIX-lib-audacious.patch ];
+
+  nativeBuildInputs = [
+    gettext
+    meson
+    ninja
+    pkg-config
+  ];
+
+  buildInputs = [
+    audacious
+    alsa-lib
+    curl
+    faad2
+    ffmpeg
+    flac
+    fluidsynth
+    gdk-pixbuf
+    lame
+    libbs2b
+    libcddb
+    libcdio
+    libcdio-paranoia
+    libcue
+    libjack2
+    libmad
+    libmms
+    libmodplug
+    libmowgli
+    libnotify
+    libogg
+    libpulseaudio
+    libsamplerate
+    libsidplayfp
+    libsndfile
+    libvorbis
+    libxml2
+    lirc
+    mpg123
+    neon
+    qtbase
+    qtmultimedia
+    soxr
+    wavpack
+    libopenmpt
+  ];
+
+  mesonFlags = [
+    "-Dgtk=false"
+  ];
+
+  dontWrapQtApps = true;
+
+  meta = audacious.meta // {
+    description = "Plugins for Audacious music player";
+  };
+}

pkgs/top-level/all-packages.nix

···
   aucatctl = callPackage ../applications/audio/aucatctl { };
 
   audacious = libsForQt5.callPackage ../applications/audio/audacious { };
+  audacious-plugins = libsForQt5.callPackage ../applications/audio/audacious/plugins.nix {
+    # Avoid circular dependency
+    audacious = audacious.override { audacious-plugins = null; };
+  };
   audaciousQt5 = audacious;
 
   audacity-gtk2 = callPackage ../applications/audio/audacity { wxGTK = wxGTK31-gtk2; };