anchor.diff:      "--with-dbusconfdir=${placeholder "out"}/etc"
     ] else [
       "--without-dbus"
  -  ]) ++ lib.optionals (!enableVideo) [
  +  ]) ++ (if enableVideo then [
  +    "--with-gtk=gtk3"
  +  ] else [
       "--disable-video"
       "--without-gtk"
       "--without-qt"
  -  ];
  +  ]);
   
     dontWrapQtApps = true;
  +  dontWrapGApps = true;
   
     postFixup = lib.optionalString enableVideo ''
  +    wrapProgram "$out/bin/zbarcam-gtk" "''${gappsWrapperArgs[@]}"
       wrapQtApp "$out/bin/zbarcam-qt"
     '';
   
  
positive.code: , libX11
  , libv4l
  , qt5
  , gtk2
  , xmlto
  , docbook_xsl
  , autoreconfHook
  
negative.code:     dbus
    ] ++ lib.optionals enableVideo [
      libv4l
      gtk3
      qt5.qtbase
      qt5.qtx11extras
    ];
  