anchor.diff:      description = "`Good' plug-ins for GStreamer";
   
       maintainers = [stdenv.lib.maintainers.raskin];
  -    platforms = stdenv.lib.platforms.linux;
  +    platforms = stdenv.lib.platforms.unix;
   
       license = stdenv.lib.licenses.lgpl2Plus;
     };
  
positive.code:   configureFlags = "--enable-experimental --disable-oss";
  
    buildInputs =
      [ pkgconfig glib gstreamer gst_plugins_base pulseaudio ]
      ++ stdenv.lib.optionals (!minimalDeps)
        [ aalib libcaca cairo libdv flac libjpeg libpng speex
          taglib bzip2 libvpx gdk_pixbuf orc libsoup ];
  
    enableParallelBuilding = true;
  
  
negative.code: { fetchurl, stdenv, pkgconfig, gst_plugins_base, aalib, cairo
  , flac, libjpeg, zlib, speex, libpng, libdv, libcaca, libvpx
  , libiec61883, libavc1394, taglib, pulseaudio, gdk_pixbuf, orc
  , glib, gstreamer, bzip2, libsoup, libintlOrEmpty
  , # Whether to build no plugins that have external dependencies
    # (except the PulseAudio plugin).
    minimalDeps ? false
  