Use a custom OCaml compiler (on Windows 😉)

[MisterDA]

Is it possible to use a custom OCaml compiler with ocaml-setup? I'd like to point to a specific repo, branch, commit, of the compiler for testing. I'd like it to work on Windows, too. If this feature is already supported, what's the syntax?

[smorimoto]

Is it possible to use it by specifying the exact package name(s)?
https://github.com/ocaml/setup-ocaml?tab=readme-ov-file#supported-version-syntax

[smorimoto]

Actually installing specific unreleased compilers seems like a lot of work, but it doesn't seem impossible. That said, most users don't need it, so I'm not sure I should implement it 🤷‍♂️