anchor.diff:  
   let
     traceLog = "/tmp/steam-trace-dependencies.log";
  -  version = "1.0.0.61";
  +  version = "1.0.0.68";
   
   in stdenv.mkDerivation {
     pname = "steam-original";
  
positive.code:       EOF
        chmod +x $out/bin/steamdeps
      ''}
      install -d $out/lib/udev/rules.d
      install -m644 lib/udev/rules.d/*.rules $out/lib/udev/rules.d
    '';
  
    meta = with stdenv.lib; {
      description = "A digital distribution platform";
      homepage = "http://store.steampowered.com/";
      license = licenses.unfreeRedistributable;
      maintainers = with maintainers; [ jagajaga ];
    };
  }
  
negative.code: 
    src = fetchurl {
      url = "https://repo.steampowered.com/steam/pool/steam/s/steam/steam_${version}.tar.gz";
      sha256 = "sha256-ZeiCYjxnH0Ath5bB20QHmE8R3wU4/3RiAw2NUhrrKNM=";
    };
  
    makeFlags = [ "DESTDIR=$(out)" "PREFIX=" ];
  