import CmmTx
import DFMonad
import FiniteMap
-import List (sortBy)
+import Data.List (sortBy)
import Maybes
import MkZipCfg
import MkZipCfgCmm hiding (CmmBlock, CmmGraph, CmmTopZ)
-import Monad
+import Control.Monad
import Outputable
import UniqSet
import UniqSupply