)
import BasicTypes ( Boxity(..) )
import UniqSet ( mkUniqSet, minusUniqSet, isEmptyUniqSet, UniqSet )
-import Unique ( unpackCStringIdKey, unpackCStringUtf8IdKey,
+import PrelNames ( unpackCStringIdKey, unpackCStringUtf8IdKey,
plusIntegerIdKey, timesIntegerIdKey )
import Outputable
import UnicodeUtil ( stringToUtf8 )