import Digraph ( stronglyConnCompR, SCC(..) )
import PrelNames ( buildIdKey, foldrIdKey, runSTRepIdKey, augmentIdKey )
import Unique ( Unique )
-import UniqFM ( keysUFM, intersectUFM_C, foldUFM_Directly )
+import LazyUniqFM ( keysUFM, intersectUFM_C, foldUFM_Directly )
import Util ( mapAndUnzip )
import Outputable