All fonts suddenly inaccessible

Today I installed the latest version of Discord from nixpkgs master after uninstalling the version I previously had. About an hour later, I launched dmenu, and it showed rectangles for all characters. Alacritty refuses to launch because of missing fonts, and Firefox now segfaults. I reboot my system, and now even i3 is unusable.

I have a big exam tomorrow, so uh Live USB time :P. But this sudden system failure seems very non-NixOS-like, so I thought I’d report it here. When I have time (and a working laptop) I’ll try to debug further.

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Yay! Fixed by https://github.com/NixOS/nixpkgs/pull/97441