[redrobein]

Does anyone know what's up with ocaml on windows? I haven't used it in a while. Trying to install utop on 5.x compiler and quite a few packages need a downgrade to 4.x? I've tried with both mingw and system-msvc. Same behavior.

[chris_armstrong]

Installing via opam and using the cygwin method is supported and should be working fine (cygwin is just used for build - binaries still just link with mingw).

That specific combination (ocaml + mingw) has a known problem with ocamlfind that's still awaiting a new release (see https://github.com/ocaml/ocamlfind/pull/112). ocamlfind underpins quite a bit of the package ecosystem, so this one is annoying, as the mingw workflow is otherwise quite good.

[Tryk]

It's incredibly painful working with OCaml and dune on Windows, unfortunately. Docs are insufficient and there is little information online :/, wish it was not the case.