diff -r af30b8875733 -r fed0251b7939 src/Tools/Code/code_haskell.ML
--- a/src/Tools/Code/code_haskell.ML	Thu Nov 25 14:59:01 2010 +0100
+++ b/src/Tools/Code/code_haskell.ML	Thu Nov 25 15:40:41 2010 +0100
@@ -362,7 +362,7 @@
   in
     Code_Target.serialization
       (fn width => fn destination => K () o map (write_module width destination))
-      (fn present => fn width => rpair (fn _ => error "no deresolving")
+      (fn present => fn width => rpair (try (deresolver ""))
         o format present width o Pretty.chunks o map snd)
       (map (uncurry print_module_frame o apsnd single) includes
         @ map (fn module_name => print_module module_name (Graph.get_node haskell_program module_name))