What version of nixpkgs do you use?

Hello, I was wondering what version (23.05, 22.11, unstable, etc) of nixpkgs you use. I personally use unstable, and it's never broken.

Edit: I also have a master input in my flake, which I added just for XIVLauncher (context: someone made a PR to fix it not building, and it got merged into master, but last time I checked it wasn't backported to unstable)