anchor.diff:  , bzip2
   , cmake
   , expat
  +, freetype
   , irrlicht
  +, libICE
   , libGL
   , libGLU
  +, libSM
  +, libX11
  +, libXext
   , libXxf86vm
   , libjpeg
   , libpng
  
positive.code:   ];
  
    buildInputs = [
      bzip2
      expat
      irrlicht
      libGL
      libGLU
      libXxf86vm
      libjpeg
      libpng
      libvorbis
      openal
      sqlite
      xlibsWrapper
    ];
  
    meta = with lib; {
  
negative.code: , openal
  , pkg-config
  , sqlite
  }:
  
  stdenv.mkDerivation rec {
  