anchor.diff:      done
     '';
   
  -  postFixup = lib.optionalString (! withWebEngineDefault) ''
  -    wrapProgram $out/bin/qutebrowser --add-flags "--backend webkit"
  -  '';
  -
     meta = with stdenv.lib; {
       homepage    = https://github.com/The-Compiler/qutebrowser;
       description = "Keyboard-focused browser with a minimal GUI";
  
positive.code:   ] ++ lib.optionals withMediaPlayback (with gst_all_1; [
      gst-plugins-base gst-plugins-good
      gst-plugins-bad gst-plugins-ugly gst-libav
    ]) ++ lib.optional (!withWebEngineDefault) python3Packages.qtwebkit-plugins;
  
    nativeBuildInputs = [
      makeWrapper wrapGAppsHook asciidoc
  
negative.code: , libxslt, gst_all_1 ? null
  , withPdfReader        ? true
  , withMediaPlayback    ? true
  }:
  
  assert withMediaPlayback -> gst_all_1 != null;
  