Follow-up from “Dumbest Thing you have done distro-hopping?”.
Here’s mine - the laptop from which I’m typing right now has a broken touchpad that keeps jumping and clicking randomly, and does not work. Well, I can’t afford to fix it, but at the moment, I was so pissed off I punched the touchpad really hard, and the machine panicked with all the lights blinking. A few more revival abuses, and the machine was back to life, but since I was running a nixos-rebuild switch --upgrade in the background, I blew off my boot partition. I think I just broke the unbreakable distro.
Unless it’s encrypted with the yubikey in an unrecoverable state, you can simply chroot into the system and reset the password.