fake:

package/gnome2/gtk+/gtk+-pkg.conf

@@ -23,6 +23,6 @@
 if [ $pkg != "gtk+" ] ; then
 	# exclude some gconf files - so we do not need to patch every
 	# single package ...
-	flistdel="$flistdel|etc/$prefix/gtk-2.0/gdk-pixbuf.loaders"
+	flistdel="$flistdel|${sysconfdir#/}/gtk-2.0/gdk-pixbuf.loaders"
 fi