{ config, ... }: { nix.settings = # Don't add hut as a cache to itself assert config.networking.hostName != "hut"; { substituters = [ "https://jungle.bsc.es/cache" ]; trusted-public-keys = [ "jungle.bsc.es:pEc7MlAT0HEwLQYPtpkPLwRsGf80ZI26aj29zMw/HH0=" ]; }; }