anchor.diff:      export CC="gcc"
       export CXX="g++"
       mkdir -p "$out" "$out/share/applications" "$out/share/pixmaps"
  -    scons --prefix="$out" OPENGL=false GTK=false CREATE_AVI=false LOGO=false SYSTEM_LUA=false install
  +    scons --prefix="$out" OPENGL=false GTK=false CREATE_AVI=false LOGO=false install
     '';
   
     meta = {
  
positive.code:   };
  
    buildInputs = [
      scons zlib SDL lua5 pkgconfig
    ];
  
    phases = "unpackPhase buildPhase";
  
negative.code: {stdenv, fetchurl, scons, zlib, SDL, lua5_1, pkgconfig}:
  
  stdenv.mkDerivation {
    name = "fceux-2.2.2";
  