It's obvious you aren't the intended audience for the code; I mean this sincerely when I say their repo is absolutely standard and simple and easily implemented

It's obvious you aren't the intended audience for the code; I mean this sincerely when I say their repo is absolutely standard and simple and easily implemented by any undergraduate student in a first year ML course. They literally give a conda environment yaml. Anaconda the most widely used distribution manager for Python and R that takes care of package installs and virtual environment management. If you don't know what that is, I would argue that isn't the fault of the researchers.