NixOS daily self-upgrading server config module for flake from different server

auto-upgrade

# Server module that checks itself daily for new config from Github flake
# source https://github.com/tfc/nixos-configs/blob/9dafd84c6de87835ca6966dae1c4c0603020c517/system-modules/auto-upgrade.nix
{ ... }:

{
  system.autoUpgrade = {
    enable = true;
    flake = "github:tfc/nixos-configs";
    flags = [ " --no-write-lock-file" ];
    allowReboot = true;
    dates = "02:00";
    rebootWindow = {
      lower = "02:00";
      upper = "05:00";
    };
  };
}