map -package:containers -package:basement -package:conduit -is:exact -is:exact -package:integration -package:base-compat -is:exact -package:hedgehog -package:psqueues package:ghc is:module

The assignment of virtual registers to stack slots
RoughMap is an approximate finite map data structure keyed on [RoughMatchTc]. This is useful when keying maps on lists of Types (e.g. an instance head).