map -package:containers is:exact -package:insert-ordered-containers -package:dense-linear-algebra -package:base-prelude -package:case-insensitive -package:hedgehog -package:conduit -package:base -package:filepath -package:dlist -package:invertible -package:blaze-html -package:psqueues -package:aeson package:charset

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