There is absolutely no way I can recommend using this at work. Nix is way too complicated. Its already bad enough being the git goto person. Nix is so complicated it somehow makes git look simple.
It's really no different from Vim in this respect. Most people will bounce off due to the learning curve, but once you get past it, the benefits are too great to go back to a more crude system. In fact it was easier to learn and setup than Vim for me.
Such as?
With every change I make, the system only gets more stable, predictable, and reliable, which is the exact opposite of every Linux distribution I've ever user before, which had to be wiped and reinstalled every couple years, after which I'd have endless struggle sessions getting everything set up. I'll never go back.
(Not a bad thing, just be aware that Nix is for when you need DIY development environment infrastructure and don't have the budget to keep a team of seven k8s specialists for the job.)