anchor.diff:      mv devilutionx.app $out/Applications
     '' else ''
       install -Dm755 -t $out/bin devilutionx
  -    install -Dt $out/share/fonts/truetype ../Packaging/resources/CharisSILB.ttf
  -    install -Dt $out/share/diasurgical/devilutionx ../Packaging/resources/devilutionx.mpq
  -
  -    # TODO: icons and .desktop (see Packages/{debian,fedora}/*)
  +    install -Dm755 -t $out/share/diasurgical/devilutionx devilutionx.mpq
  +    install -Dm755 -t $out/share/applications ../Packaging/nix/devilutionx-hellfire.desktop ../Packaging/nix/devilutionx.desktop
  +    install -Dm755 ../Packaging/resources/icon.png $out/share/icons/hicolor/512x512/apps/devilution.png
  +    install -Dm755 ../Packaging/resources/hellfire.png $out/share/icons/hicolor/512x512/apps/devilution-hellfire.png
     '') + ''
   
       runHook postInstall
  
positive.code:     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.windows;
    };
  }
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , fetchurl
  , fetchzip
  , cmake
  , gettext
  , SDL2
  , fmt
  , libpng
  , smpq
  }:
  
  let
    # TODO: submit a PR upstream to allow system copies of these libraries
    asio = fetchurl {
      url = "https://github.com/diasurgical/asio/archive/ebeff99f539da23d27c2e8d4bdbc1ee011968644.tar.gz";
      sha256 = "0vhb4cig40mm0a98i74grpmfkcmby8zxg6vqa38dpryxpgvp5fw8";
    };
  
    SDL_audiolib = fetchurl {
      url = "https://github.com/realnc/SDL_audiolib/archive/aa79660eba4467a44f9dcaecf26b0f0a000abfd7.tar.gz";
      sha256 = "0z4rizncp6gqsy72b3709zc9fr915wgcwnlx1fhhy7mrczsly630";
    };
  
    SDL_image = fetchurl {
      url = "https://github.com/libsdl-org/SDL_image/archive/refs/tags/release-2.0.5.tar.gz";
      sha256 = "1zw3k40kbmwc2w9l8fkzrk8maidapmciw3lgcml86pqs9izzddvn";
    };
  
    simpleini = fetchzip {
      url = "https://github.com/brofield/simpleini/archive/7bca74f6535a37846162383e52071f380c99a43a.zip";
      sha256 = "07kf1jjbc9v04hsysa6v2wh1m9csf5qz0b1wmlkf9sj00kf47zj7";
    };
  in
  
  stdenv.mkDerivation rec {
    pname = "devilutionx";
    version = "1.3.0";
  
    src = fetchFromGitHub {
      owner = "diasurgical";
      repo = "devilutionX";
      rev = version;
      sha256 = "0acrkqi0pr3cbr5i1a1vfrnxv1n3xmql5d86bm2gywvpdb94xads";
    };
  
    postPatch = ''
      substituteInPlace Source/init.cpp --replace "/usr/share/diasurgical/devilutionx/" "${placeholder "out"}/share/diasurgical/devilutionx/"
  
      # download dependencies ahead of time
      substituteInPlace 3rdParty/asio/CMakeLists.txt --replace "https://github.com/diasurgical/asio/archive/ebeff99f539da23d27c2e8d4bdbc1ee011968644.tar.gz" "${asio}"
      substituteInPlace 3rdParty/SDL_audiolib/CMakeLists.txt --replace "https://github.com/realnc/SDL_audiolib/archive/aa79660eba4467a44f9dcaecf26b0f0a000abfd7.tar.gz" "${SDL_audiolib}"
      substituteInPlace 3rdParty/SDL_image/CMakeLists.txt --replace "https://github.com/libsdl-org/SDL_image/archive/refs/tags/release-2.0.5.tar.gz" "${SDL_image}"
      substituteInPlace 3rdParty/simpleini/CMakeLists.txt --replace "https://github.com/brofield/simpleini/archive/7bca74f6535a37846162383e52071f380c99a43a.zip" "${simpleini}"
    '';
  
    cmakeFlags = [
      "-DBINARY_RELEASE=ON"
      "-DVERSION_NUM=${version}"
      "-DPACKET_ENCRYPTION=OFF" # FIXME: build with libsodium
      "-DDISABLE_ZERO_TIER=ON" # FIXME: build with libzt
    ];
  
    nativeBuildInputs = [
      cmake
      gettext
      smpq # used to build devilutionx.mpq
    ];
  
    buildInputs = [
      fmt
      libpng
      (SDL2.override { withStatic = true; })
    ];
  
    installPhase = ''
      runHook preInstall
  