anchor.diff:  { stdenv, fetchurl, fetchpatch, meson, ninja, gettext
   , pkgconfig, python, gst-plugins-base, orc
   , faacSupport ? false, faac ? null
  -, faad2, libass, libkate, libmms
  -, libmodplug, mpeg2dec
  +, faad2, libass, libkate, libmms, librdf, ladspaH
  +, libnice, webrtc-audio-processing, lilv, lv2, serd, sord, sratom
  +, libbs2b, libmodplug, mpeg2dec
   , openjpeg, libopus, librsvg
   , wildmidi, fluidsynth, libvdpau, wayland
   , libwebp, xvidcore, gnutls, mjpegtools
  
positive.code:   buildInputs = [
      gst-plugins-base orc
      faad2 libass libkate libmms
      libmodplug mpeg2dec
      openjpeg libopus librsvg
      fluidsynth libvdpau
  
negative.code:         sha256 = "0hy0rcn35alq65yqwri4fqjz2hf3nyyg5c7rnndk51msmqjxpprk";
      })
      ./fix_pkgconfig_includedir.patch
      # Enable bs2b compilation
      # https://bugzilla.gnome.org/show_bug.cgi?id=794346
      (fetchurl {
        url = https://bugzilla.gnome.org/attachment.cgi?id=369724;
        sha256 = "1716mp0h2866ab33w607isvfhv1zwyj71qb4jrkx5v0h276v1pwr";
      })
    ];
  
    src = fetchurl {
  