This is a very specific question but I thought I'd ask it here on the chance someone might have a good answer.

I've been slowly working my way through this course and I ran into an issue recently when I upgraded my OCaml installation to the latest version (4.13.1). With this version I find that the simple instructions for building an executable with dune (especially one that uses OUnit) given here https://cs3110.github.io/textbook/chapters/data/ounit.html no longer work.

It seems dune now requires you to initialize a project. Does anyone know how to translate the instructions in the course to the current version of dune ?

I realize I could install an opam switch for the previous version but I'd rather be working with the latest one.

Just hoping someone might be able to save me an hour or so figuring this out on my own.