{ config, ... }:

{
  nix.settings = {
    substituters = [
      "http://cache.${config.networking.domain}"
    ];

    trusted-public-keys = [
      "cache.${config.networking.domain}:ugWyeMyNqHvSEXDVgcPZ5NCniqq0wqKQCb3rjqXb/jU="
    ];
  };
}