compact

This package provides user-facing APIs for working with "compact regions", which hold a fully evaluated Haskell object graph. These regions maintain the invariant that no pointers live inside the struct that point outside it, which ensures efficient garbage collection without ever reading the structure contents (effectively, it works as a manually managed "oldest generation" which is never freed until the whole is released). This package is currently highly experimental, but we hope it may be useful to some people. It is GHC 8.2 and later only. The bare-bones library that ships with GHC is ghc-compact.