import CmdLineOpts ( opt_FoldrBuildOn )
import CoreUtils ( coreExprType, mkCoreIfThenElse )
-import PrelInfo ( nilDataCon, consDataCon, listTyCon,
- mkBuild, foldrId )
+import PrelVals ( mkBuild, foldrId )
import Type ( mkTyVarTy, mkForAllTy, mkFunTys )
import TysPrim ( alphaTy )
+import TysWiredIn ( nilDataCon, consDataCon, listTyCon )
import TyVar ( alphaTyVar )
import Match ( matchSimply )
import Util ( panic )