Yeah the NixOS recommendation here is clearly a joke and I wouldn't recommend it to almost anyone, but I too switched about a month ago, and it's basically made for LLMs. Let them read the Git repo and they'll actually have a chance at figuring out the issues you have.
It's not a joke. Despite of all the shortcomings it's the only way to have reproducible environments and stay sane. LLMs do help with learning curve, yes.
But: you will have issues.