{ pkgs, ... }:
{
  # Common admin/monitoring tools available on every host.
  environment.systemPackages = with pkgs; [
    htop
    bottom
    iotop
    ncdu
    ripgrep
    fd
    jq
    lsof
    tmux
  ];

  # Firmware updates for all machines (laptops AND servers).
  services.fwupd.enable = true;
}