[Better error message in Type.hs (fails in CGI, though)
Joachim Breitner <mail@joachim-breitner.de>**20100828165837
 Ignore-this: eed3aa38ea98b52558afbcfe528450fa
] hunk ./Type.hs 227
-                        ; return $ ECon id (TVar i) c es' }}
+                        ; return $ ECon id (TVar i) c es' }
+                 Nothing -> fail $ "No type " ++ show c ++ " in type map"
+             }