nixos/hosts/Legion/configuration.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running `nixos-help`).
{ ... }: {
  users.mutableUsers = false;
  system.autoUpgrade = {
    dates = "02:30";
    allowReboot = true;
    rebootWindow = {
      lower = "02:00";
      upper = "05:00";
    };
  };
}