anchor.diff:  { stdenv, lib, fetchurl, fetchzip, python3Packages
  -, makeWrapper, wrapGAppsHook, qtbase, glib-networking
  +, mkDerivationWith, wrapQtAppsHook, wrapGAppsHook, qtbase, glib-networking
   , asciidoc, docbook_xml_dtd_45, docbook_xsl, libxml2
   , libxslt, gst_all_1 ? null
   , withPdfReader        ? true
  
positive.code:   ]);
  
    nativeBuildInputs = [
      makeWrapper wrapGAppsHook asciidoc
      docbook_xml_dtd_45 docbook_xsl libxml2 libxslt
    ];
  
  
negative.code:     done
    '';
  
    postFixup = ''
      wrapProgram $out/bin/qutebrowser \
        "''${gappsWrapperArgs[@]}" \
        "''${qtWrapperArgs[@]}"
    '';
  
    meta = with stdenv.lib; {
      homepage    = https://github.com/The-Compiler/qutebrowser;
      description = "Keyboard-focused browser with a minimal GUI";
  