map -package:containers -package:base-prelude -package:ghc -package:imports -package:conduit -package:invertible -package:bytestring -package:dense-linear-algebra -package:os-string -package:case-insensitive -package:monoidal-containers -package:base-compat package:charset

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