nixos/modules/core/system.nix

{
  config,
  lib,
  ...
}:
with lib;
let
  cfg  = config.system;
in
{
  nix = {
    settings = {
      experimental-features = [
        "nix-command"
        "flakes"
      ];
    };
  };

  time.timeZone = cfg.timeZone;

  system.stateVersion = "25.05";
}