map is:exact -package:text -package:base-compat-batteries -package:dense-linear-algebra -package:base-prelude -package:dlist -package:incipit-base -package:aeson -package:base-compat -package:filepath -package:blaze-html -package:bytestring -package:base package:case-insensitive
Transform the original string-like value but keep it case insensitive.