map is:exact -package:charset -package:basement -package:containers -package:ghc -package:case-insensitive -package:imports -package:aeson -package:pipes -package:psqueues -package:text package:hedgehog

Generates a map using a Range to determine the length. This may fail to generate anything if the keys produced by the generator do not account for a large enough number of unique items to satify the required map size.