I've no experience with Nix, but I tried guix package manager and it was fine. I didn't hit any edge cases, but I didn't dive deep. I tried installing GuixSD

I've no experience with Nix, but I tried guix package manager and it was fine. I didn't hit any edge cases, but I didn't dive deep. I tried installing GuixSD (the OS) too, but failed, and because I was in a hurry, couldn't investigate much. But I did hit a critical issue: scarse docs. It's nowhere near FreeBSD where docs indeed help you out without a google search.