anchor.diff:    meta = with stdenv.lib; {
       homepage = "https://github.com/diasurgical/devilutionX";
       description = "Diablo build for modern operating systems";
  +    longDescription = "In order to play this game a copy of diabdat.mpq is required. Place a copy of diabdat.mpq in ~/.local/share/diasurgical/devilution before executing the game.";
       license = licenses.unlicense;
       maintainers = [ maintainers.karolchmist ];
       platforms = platforms.linux ++ platforms.darwin ++ platforms.windows;
  
positive.code:   installPhase = ''
      runHook preInstall
  
      mkdir -p $out/bin
      cp devilutionx $out/bin
  
      runHook postInstall
    '';
  
negative.code: { stdenv, fetchFromGitHub, cmake, SDL2, SDL2_mixer, SDL2_ttf, libsodium, pkg-config }:
  stdenv.mkDerivation rec {
    version = "0.5.0";
    pname = "devilutionx";
  
    src = fetchFromGitHub {
      owner = "diasurgical";
      repo = "devilutionX";
      rev = version;
      sha256 = "010hxj129zmsynvizk89vm2y29dcxsfi585czh3f03wfr38rxa6b";
    };
  
    NIX_CFLAGS_COMPILE = "-I${SDL2_ttf}/include/SDL2";
  
    nativeBuildInputs = [ pkg-config cmake ];
    buildInputs = [ libsodium SDL2 SDL2_mixer SDL2_ttf ];
  