anchor.diff:  mkXfceDerivation {
     category = "xfce";
     pname = "xfce4-panel";
  -  version = "4.16.2";
  +  version = "4.16.3";
   
  -  sha256 = "0wy66viwjnp1c0lgf90fp3vyqy0f1m1kbfdym8a0yrv2b6sn3958";
  +  sha256 = "085hxllsf792sgi8nn0qjfj5vclbrw2dgrgzl6gy55lxcbhkml9x";
   
     nativeBuildInputs = [
       gobject-introspection
  
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
  