mpd: fix build on darwin

* disable systemd
* disable alsaLib
* disable ffado
* compile with gccApple
* disable libmad

pkgs/servers/mpd/default.nix

@@ -18,8 +18,7 @@
 , samplerateSupport ? true, libsamplerate
 , mmsSupport ? true, libmms
 , mpg123Support ? true, mpg123
-, aacSupport ? true, faad2
-}:
+, aacSupport ? true, faad2 }:
 
 let
 
@@ -28,17 +27,20 @@ let
   mkFlag = c: f: if c then "--enable-${f}" else "--disable-${f}";
 
 in stdenv.mkDerivation rec {
-  name = "mpd-0.17.3";
+  name = "mpd-0.17.4";
   src = fetchurl {
-    url = "mirror://sourceforge/musicpd/${name}.tar.bz2";
-    sha256 = "1iilimlyhw22lpbqiab4qprznxg9c4d68fkrr9jww765b4c7x1ip";
+    url = "http://www.musicpd.org/download/mpd/stable/${name}.tar.gz";
+    sha256 = "06diyprg65xx0c0bgxdwlgrc5bhwy6cf39rabwnv9ikhimh94ir3";
   };
 
-  buildInputs = [ pkgconfig glib systemd ]
-    ++ opt alsaSupport alsaLib
+  buildInputs = [ pkgconfig glib ]
+    ++ opt (!stdenv.isDarwin) systemd
+    ++ opt (!stdenv.isDarwin && alsaSupport) alsaLib
     ++ opt flacSupport flac
     ++ opt vorbisSupport libvorbis
-    ++ opt madSupport libmad
+    # using libmad to decode mp3 files on darwin is causing a segfault -- there
+    # is probably a solution, but I'm disabling it for now
+    ++ opt (!stdenv.isDarwin && madSupport) libmad
     ++ opt id3tagSupport libid3tag
     ++ opt mikmodSupport libmikmod
     ++ opt shoutSupport libshout
@@ -47,7 +49,7 @@ in stdenv.mkDerivation rec {
     ++ opt soupSupport libsoup
     ++ opt bzip2Support bzip2
     ++ opt audiofileSupport audiofile
-    ++ opt ffadoSupport ffado
+    ++ opt (!stdenv.isDarwin && ffadoSupport) ffado
     ++ opt ffmpegSupport ffmpeg
     ++ opt fluidsynthSupport fluidsynth
     ++ opt samplerateSupport libsamplerate
@@ -56,13 +58,12 @@ in stdenv.mkDerivation rec {
     ++ opt aacSupport faad2
     ++ opt zipSupport zziplib;
 
-  configureFlags = [
-    "--with-systemdsystemunitdir=$(out)/etc/systemd/system"
-    (mkFlag alsaSupport "alsa")
+  configureFlags =
+    [ (mkFlag (!stdenv.isDarwin && alsaSupport) "alsa")
       (mkFlag flacSupport "flac")
       (mkFlag vorbisSupport "vorbis")
       (mkFlag vorbisSupport "vorbis-encoder")
-    (mkFlag madSupport "mad")
+      (mkFlag (!stdenv.isDarwin && madSupport) "mad")
       (mkFlag mikmodSupport "mikmod")
       (mkFlag id3tagSupport "id3")
       (mkFlag shoutSupport "shout")
@@ -71,7 +72,7 @@ in stdenv.mkDerivation rec {
       (mkFlag soupSupport "soup")
       (mkFlag audiofileSupport "audiofile")
       (mkFlag bzip2Support "bzip2")
-    (mkFlag ffadoSupport "ffado")
+      (mkFlag (!stdenv.isDarwin && ffadoSupport) "ffado")
       (mkFlag ffmpegSupport "ffmpeg")
       (mkFlag fluidsynthSupport "fluidsynth")
       (mkFlag zipSupport "zzip")
@@ -79,22 +80,25 @@ in stdenv.mkDerivation rec {
       (mkFlag mmsSupport "mms")
       (mkFlag mpg123Support "mpg123")
       (mkFlag aacSupport "aac")
-  ];
+      "--enable-debugging" ]
+    ++ opt (!stdenv.isDarwin)
+      "--with-systemdsystemunitdir=$(out)/etc/systemd/system";
 
   NIX_LDFLAGS = ''
     ${if shoutSupport then "-lshout" else ""}
   '';
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "A flexible, powerful daemon for playing music";
+    homepage    = http://mpd.wikia.com/wiki/Music_Player_Daemon_Wiki;
+    license     = licenses.gpl2;
+    maintainers = with maintainers; [ astsmtl ];
+    platforms   = platforms.unix;
+
     longDescription = ''
       Music Player Daemon (MPD) is a flexible, powerful daemon for playing
       music. Through plugins and libraries it can play a variety of sound
       files while being controlled by its network protocol.
     '';
-    homepage = http://mpd.wikia.com/wiki/Music_Player_Daemon_Wiki;
-    license = "GPLv2";
-    maintainers = with stdenv.lib.maintainers; [ astsmtl ];
-    platforms = with stdenv.lib.platforms; linux;
   };
 }

pkgs/top-level/all-packages.nix

@@ -5902,7 +5902,13 @@ let
 
   mod_wsgi = callPackage ../servers/http/apache-modules/mod_wsgi { };
 
-  mpd = callPackage ../servers/mpd { };
+  mpd = callPackage ../servers/mpd {
+    # resolve the "stray '@' in program" errors
+    stdenv = if stdenv.isDarwin
+      then overrideGCC stdenv gccApple
+      else stdenv;
+  };
+
   mpd_clientlib = callPackage ../servers/mpd/clientlib.nix { };
 
   miniHttpd = callPackage ../servers/http/mini-httpd {};