This library is built upon multicore Ocaml. We've spoken about multicore OCaml for a long time, and apparently, the last tentative of it is being developed.
When will multicore Ocaml land into the stable version of the compiler?
(I work on multicore OCaml) Multicore OCaml has been steadily under development, with the latest updates here: https://ocaml.io/w/Multicore. While I can't promise when multicore lands in trunk, a stable-alpha version installable through opam should be ready in the next few weeks.
