map -package:containers -package:insert-ordered-containers -package:dense-linear-algebra -package:invertible -package:Cabal-syntax -package:basement -package:hedgehog -package:integration -package:case-insensitive -package:aeson -package:psqueues -package:base-compat package:charset

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