map -package:containers -package:case-insensitive -package:aeson -package:ghc -is:exact -package:Cabal-syntax -package:invertible -package:base-compat -package:integration -is:exact -package:insert-ordered-containers -is:exact -package:bytestring -package:blaze-html -is:exact package:charset

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