anchor.diff:      sha256 = "sha256-F71JXgYaWAye+nlSrZvGjJ4ucvHTx3tPZHRC5QI4QiU=";
     };
   
  -  buildInputs = [ gumbo harfbuzz jbig2dec mupdf mujs openjpeg qt3d qtbase ];
  +  buildInputs = [ gumbo harfbuzz jbig2dec mupdf mujs openjpeg qt3d qtbase ]
  +    ++ lib.optionals stdenv.isDarwin [ freetype ];
   
     nativeBuildInputs = [ installShellFiles wrapQtAppsHook qmake ];
   
  +  qmakeFlags = lib.optionals stdenv.isDarwin [ "CONFIG+=non_portable" ];
  +
     postPatch = ''
  +    substituteInPlace pdf_viewer_build_config.pro \
  +      --replace "-lmupdf-threads" "-lgumbo -lharfbuzz -lfreetype -ljbig2dec -ljpeg -lopenjp2"
       substituteInPlace pdf_viewer/main.cpp \
         --replace "/usr/share/sioyek" "$out/share" \
         --replace "/etc/sioyek" "$out/etc"
     '';
   
  -  postInstall = ''
  +  postInstall = if stdenv.isDarwin then ''
  +    cp -r pdf_viewer/shaders sioyek.app/Contents/MacOS/shaders
  +    cp pdf_viewer/prefs.config sioyek.app/Contents/MacOS/
  +    cp pdf_viewer/prefs_user.config sioyek.app/Contents/MacOS/
  +    cp pdf_viewer/keys.config sioyek.app/Contents/MacOS/
  +    cp pdf_viewer/keys_user.config sioyek.app/Contents/MacOS/
  +    cp tutorial.pdf sioyek.app/Contents/MacOS/
  +
  +    mkdir -p $out/Applications
  +    cp -r sioyek.app $out/Applications
  +  '' else  ''
       install -Dm644 tutorial.pdf $out/share/tutorial.pdf
       cp -r pdf_viewer/shaders $out/share/
       install -Dm644 -t $out/etc/ pdf_viewer/{keys,prefs}.config
  
positive.code: , stdenv
  , installShellFiles
  , fetchFromGitHub
  , gumbo
  , harfbuzz
  , jbig2dec
  
negative.code:     homepage = "https://sioyek.info/";
      changelog = "https://github.com/ahrm/sioyek/releases";
      license = licenses.gpl3Only;
      platforms = platforms.linux ++ platforms.darwin;
      maintainers = [ maintainers.podocarp ];
    };
  }
  