I'm on Fedora Workstation since 30.

I've been forcing myself to get into NixOS. The idea is great. The Nix expression language isn't hard. I like the immutable root and generations (snapshots).

Setting up a desktop environment or Window Manager is quick and easy. Applications selection is great and you can install different versions in parallel.

The biggest problem for me is on the driver/hardware suppoet of my 2022 gaming laptop. Suspend, sleep, hibernate can be finicky. The graphics driver can also be hit or miss.

Documentation can be better especially for the NixOS exclusive behaviors. The Nix configurations needs more details as to what it exactly does and the packages it pulls. The Arch wiki and other Linux docs can cover the general stuff.