anchor.diff:    nativeBuildInputs = [
       glib
       gnome-shell
  +    jdupes
       libxml2
       sassc
       util-linux
  
positive.code:       ${lib.optionalString (panelSize != null) ("--panel-size " + panelSize)} \
        --dest $out/share/themes
  
      runHook postInstall
    '';
  
  
negative.code: , glib
  , gnome-shell
  , gnome-themes-extra
  , jdupes
  , libxml2
  , sassc
  , util-linux
  