{...}: {
  boot.loader = {
    systemd-boot.enable = true;
    systemd-boot.configurationLimit = 20;
    efi.canTouchEfiVariables = true;
    # Hide the OS choice for bootloaders.
    # It's still possible to open the bootloader list by pressing any key
    # It will just not appear on screen unless a key is pressed
    timeout = 0;
  };
}