Well, you blamed glib2 module.
But my guess would be gdk2 with
proc string*(drawable: PDrawable, font: PFont, gc: PGC, x: gint,
y: gint, text: cstring, text_length: gint){.cdecl,
dynlib: lib,
importc: "gdk_draw_string".}
You may try
import gdk2 except string
or delete that entry from module gdk2.
