map -package:conduit -is:exact -package:dlist -package:Cabal-syntax -is:exact -package:base-compat-batteries -package:base -package:filepath -package:dense-linear-algebra -package:ghc package:hedgehog is:exact
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.