What exactly are the problems with using it on macOS? So far (on my, admittedly, short nix journey), I’ve not encountered any issues that wasn’t fixable with 5 mins of google (even as a beginner).
In my experience, nix-darwin and home manager are a little awkward to install together (you’ll want both) and central management is…tricky. All of these being large company problems, mind - I can’t rely on the median user googling to fix issues, they expect (reasonably) an actively supported platform.
I’ve also had issues with GUIs and Xcode as noted in other comments but I don’t mind that - those are much more of a solved problem than, say, keeping seven different JDKs around.
