import {-# SOURCE #-} PrelErr ( error )
import PrelNum
+import PrelNumExtra
import PrelList
import PrelTup
import PrelMaybe
import Monad
-- needed for readIO.
-import PrelIOBase ( IO, fail, userError )
-
+import PrelIOBase ( IO, userError )
+import PrelException ( fail )
\end{code}
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