anchor.diff:      repo = "Unvanquished";
       rev = "v${version}";
       fetchSubmodules = true;
  -    sha256 = "1acda1559q6zwmhg3x00nai88hy83i5hcfli2bqfab7slr95lm27";
  +    sha256 = "1fiqn9f6nsh4cfjy7gfsv950hphwi9ca0ddgsjvn77g7yc0arp6c";
     };
   
     unvanquished-binary-deps = stdenv.mkDerivation rec {
  
positive.code: }:
  
  let
    version = "0.52.0";
    binary-deps-version = "5";
  
    src = fetchFromGitHub {
  
negative.code:     # don't replace the following lib.licenses.zlib with just "zlib",
      # or you would end up with the package instead
      license = with lib.licenses; [
        mit gpl3Plus lib.licenses.zlib bsd3 # engine
        cc-by-sa-25 cc-by-sa-30 cc-by-30 cc-by-sa-40 cc0 # assets
      ];
    };
  }
  