anchor.diff:    NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
   
     meta = {
  -    description = "Xfce's panel";
  +    description = "Panel for the Xfce desktop environment";
     };
   }
  
positive.code:   patches = [ ./xfce4-panel-datadir.patch ];
  
    postPatch = ''
      for f in $(find . -name \*.sh); do
        substituteInPlace $f --replace gettext ${gettext}/bin/gettext
      done
      substituteInPlace plugins/clock/clock.c \
         --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
    '';
  
negative.code: { mkXfceDerivation
  , exo
  , garcon
  , glib
  , gobject-introspection
  , gtk3
  