Nix on MacOS is fine. I've actually experienced less stability running VMs and Docker than I have with Nix on MacOS. nix-darwin is the missing piece of the puzz

Nix on MacOS is fine. I've actually experienced less stability running VMs and Docker than I have with Nix on MacOS. nix-darwin is the missing piece of the puzzle, providing NixOS-like functionality. NixOS is pretty great too, but there's no need to run a VM to use it. NixOS generally solves OS problems. Adding a VM just adds complexity.