Lazouich Ford

I'd throw in looking at `nox` as well. You can see an [example](https://github.com/jupyter/jupyter.github.io/tree/main?tab=readme-ov-file) used by jupyter and their corresponding `noxfile.py` [file](https://github.com/jupyter/jupyter.github.io/blob/main/noxfile.py) .

That's fair, I'm not the biggest fan of conda - which Jupyter uses to install ruby within nox in that example ^

I'd start with the suggestions it gave of checking `rbenv install ---list` and double check that 3.3.5 is available. I'd also make sure `ruby-build` is updated to the latest version...