anchor.diff:    ] ++ stdenv.lib.optionals stdenv.isDarwin [
       imagemagick
       libicns  # For the png2icns tool.
  +    installShellFiles
     ];
   
     propagatedBuildInputs = stdenv.lib.optional stdenv.isLinux libGL;
  
positive.code:     ln -s ../Applications/kitty.app/Contents/MacOS/kitty "$out/bin/kitty"
      mkdir "$out/Applications"
      cp -r kitty.app "$out/Applications/kitty.app"
      '' else ''
      cp -r linux-package/{bin,share,lib} $out
      ''}
  
negative.code:   harfbuzz, fontconfig, pkgconfig, ncurses, imagemagick, xsel,
    libstartup_notification, libGL, libX11, libXrandr, libXinerama, libXcursor,
    libxkbcommon, libXi, libXext, wayland-protocols, wayland,
    installShellFiles,
    which, dbus,
    Cocoa,
    CoreGraphics,
  