anchor.diff:      gst-plugins-base
       gtk3
       libcap
  +    libice
  +    libsm
       libvorbis
  +    libx11
       pulseaudio_lib
       systemd_lib
       tdb
  -    xorg.libICE
  -    xorg.libSM
  -    xorg.libX11
     ];
   
     preConfigure = ''
  
positive.code: }:
  
  let
    inherit (stdenv.lib)
      boolEn;
  in
  stdenv.mkDerivation rec {
  
negative.code:     gtkModule = "/lib/gtk-2.0/";
    };
  
    meta = with lib; {
      description = "XDG Sound Theme and Name Specifications";
      homepage = http://0pointer.de/lennart/projects/libcanberra/;
      license = licenses.lgpl2Plus;
  