Ok, just went through a bit of a right of passage I'd somehow doged until now: my WM hard crashed durring an #arch update, leaving me with an unbootable kernel.
A few hours (and a few boots to a live USB) later, and I'm back in and have restored the damage with no data lost. But it's (another!) wake up call that I need to be better about backing things up (and maybe find a WM that doesn't crash…)
And yes, #guix folks, I know this wouldn't have been an issue with your distro :D