anchor.diff:    src = fetchurl {
       url = "https://www.libsdl.org/release/SDL2-${version}.tar.gz";
       hashOutput = false;
  -    sha256 = "da55e540bf6331824153805d58b590a29c39d2d506c6d02fa409aedeab21174b";
  +    sha256 = "442038cf55965969f2ff06d976031813de643af9c9edc9e331bd761c242e8785";
     };
   
     buildInputs = [
  
positive.code: }:
  
  let
    version = "2.0.4";
  in
  stdenv.mkDerivation rec {
    name = "SDL-${version}";
  
negative.code:     };
    };
  
    meta = with lib; {
      description = "Simple Direct Media Layer";
      homepage = http://www.libsdl.org;
      license = licenses.zlib;
      maintainers = with maintainers; [
        wkennington
      ];
  