anchor.diff:      nss
       stdenv.cc.cc
       zlib
  +    libuuid
     ] ++
     (with xorg; [
       libX11
  
positive.code: , curl
  , freetype
  , libpulseaudio
  , systemd
  , flite ? null
  , libXxf86vm ? null
  }:
  
  let
    desktopItem = makeDesktopItem {
      name = "minecraft-launcher";
  
negative.code:   };
  
    envLibPath = stdenv.lib.makeLibraryPath [
      curl
      libpulseaudio
      systemd
      alsaLib # needed for narrator
      flite # needed for narrator
      libXxf86vm # needed only for versions <1.13
    ];
  
    libPath = stdenv.lib.makeLibraryPath ([
      alsaLib
  