anchor.diff:    };
   
     envLibPath = stdenv.lib.makeLibraryPath [
  -      curl
  -      libpulseaudio
  -      systemd
  -      alsaLib # needed for narrator
  -      flite # needed for narrator
  -      libXxf86vm # needed only for versions <1.13
  -    ];
  +    curl
  +    libpulseaudio
  +    systemd
  +    alsaLib # needed for narrator
  +    flite # needed for narrator
  +    libXxf86vm # needed only for versions <1.13
  +  ];
   
     libPath = stdenv.lib.makeLibraryPath ([
       alsaLib
  
positive.code:     nss
      stdenv.cc.cc
      zlib
    ] ++
    (with xorg; [
      libX11
  
negative.code:     libXScrnSaver
    ]));
  in
  stdenv.mkDerivation rec {
    pname = "minecraft-launcher";
  
    version = "2.1.14947";
  
    src = fetchurl {
      url = "https://launcher.mojang.com/download/linux/x86_64/minecraft-launcher_${version}.tar.gz";
      sha256 = "1lsc39n1kq08sssnpr6kf4lfpy01a7i7rgvi298mmxsprjmc7a9q";
    };
  
    icon = fetchurl {
  