Interop with OCaml is perfect and should remain so. ppx should work (modulo issues that we're not aware of). You can even upgrade your existing OCaml source co

Interop with OCaml is perfect and should remain so. ppx should work (modulo issues that we're not aware of). You can even upgrade your existing OCaml source code to be in the Reason style by using the versatile `refmt` program that is included.