map -package:Cabal -package:base -package:text -is:exact -package:containers -package:unordered-containers -package:regex-tdfa -package:utility-ht -is:exact package:case-insensitive

map :: FoldCase s2 => (s1 -> s2) -> CI s1 -> CI s2
case-insensitive Data.CaseInsensitive
Transform the original string-like value but keep it case insensitive.