map -package:containers -package:ghc -package:aeson -package:base-compat-batteries -package:monoidal-containers -package:dense-linear-algebra -package:base-compat -package:case-insensitive is:exact -package:invertible -package:basement -package:base -package:psqueues -package:regex-tdfa -package:filepath package:charset

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