map -package:containers -package:aeson -is:exact -package:conduit -package:bytestring -package:case-insensitive -package:dlist -package:foldl -package:base-compat -package:base -package:Cabal-syntax -package:insert-ordered-containers -is:exact package:charset

map :: (Char -> Char) -> CharSet -> CharSet
charset Data.CharSet