anchor.diff: -{stdenv, fetchurl, scons, zlib, SDL, lua5, pkgconfig}:
  +{stdenv, fetchurl, scons, zlib, SDL, lua5_1, pkgconfig}:
   
   stdenv.mkDerivation {
     name = "fceux-2.2.2";
  
positive.code:   };
  
    buildInputs = [
      scons zlib SDL lua5 pkgconfig
    ];
  
    phases = "unpackPhase buildPhase";
  
negative.code:     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 install
    '';
  
    meta = {
  