Work has already started: https://github.com/ocaml-multicore/eio https://github.com/ocaml-multicore/eio There's also now https://github.com/talex5/lwt_eio http

Work has already started: https://github.com/ocaml-multicore/eio https://github.com/ocaml-multicore/eio There's also now https://github.com/talex5/lwt_eio https://github.com/talex5/lwt_eio, which allows you to run existing Lwt code alongside code using effects, to aid with porting.