import Generics
import Class
import TyCon
-import Type
import MkId
import Id
import Name
import Var
import NameEnv
import NameSet
-import OccName
import RdrName
import Outputable
import PrelNames
import DynFlags
import ErrUtils
import Util
-import Unique
import ListSetOps
import SrcLoc
import Maybes