System/modules/linux/services/resolved.nix

{ config, lib, pkgs, ... }:

with lib; {
  config = mkIf config.nathan.services.resolved.enable {
    services.resolved = {
      enable = true;
      domains = config.nathan.services.resolved.domains;
      fallbackDns = [ config.nathan.services.resolved.nameserver ];
      extraConfig = ''
        [Resolve]
        DNS=${config.nathan.services.resolved.nameserver}
      '';
    };
  };
}