anchor.diff:  , agg, alsaLib, soundtouch, openal
   , desktop_file_utils
   , gtk2, gtkglext, libglade, pangox_compat
  -, mesa, mesa_glu, libpcap, SDL, zziplib }:
  +, mesa_glu, libpcap, SDL, zziplib }:
   
   with stdenv.lib;
   stdenv.mkDerivation rec {
  
positive.code:     platforms = platforms.linux;
    };
  }
  # TODO: investigate osmesa and glade
  
negative.code:   buildInputs =
    [ pkgconfig libtool intltool libXmu lua agg alsaLib soundtouch
      openal desktop_file_utils gtk2 gtkglext libglade pangox_compat
      mesa_glu libpcap SDL zziplib ];
  
    configureFlags = [
      "--disable-glade"  # Failing on compile step
      "--enable-openal"
      "--enable-glx"
  