-import Bag ( unionBags )
-import BasicTypes ( SYN_IE(Module) )
-import CmdLineOpts ( opt_DoCoreLinting, opt_SccGroup, opt_SccProfilingOn )
-import CostCentre ( IsCafCC(..), mkAutoCC )
-import CoreLift ( liftCoreBindings )
-import CoreLint ( lintCoreBindings )
-import Id ( nullIdEnv, mkIdEnv, idType,
- SYN_IE(DictVar), GenId, SYN_IE(Id) )
-import Outputable ( PprStyle(..) )
+import Bag ( isEmptyBag )
+import BasicTypes ( Module )
+import CmdLineOpts ( opt_SccGroup, opt_SccProfilingOn )
+import CoreLint ( beginPass, endPass )
+import ErrUtils ( doIfSet )
+import Outputable