kremlin, ocaml-process: Error: /opt/local/lib/ocaml/site-lib/process/process.cmi is not a compiled interface for this version of OCaml. It seems to be for an older version of OCaml.

[ryandesign (Ryan Carsten Schmidt)]

kremlin fails with:

​https://build.macports.org/builders/ports-13_x86_64-builder/builds/66615/steps/install-port/logs/stdio

Error: /opt/local/lib/ocaml/site-lib/process/process.cmi
       is not a compiled interface for this version of OCaml.
It seems to be for an older version of OCaml.
Command exited with code 2.

/opt/local/lib/ocaml/site-lib/process/process.cmi is from the ocaml-process port.

Similar prior tickets about other ports: #62576, #46186