{
  config,
  pkgs,
  modulesPath,
  ...
}:
let
  svc = config.system.service;
in
{
  defaultProfile.packages = with pkgs; [
    # Levitate enable us to mass-reinstall the system on the fly.
    (levitate.override {
      config = {
        imports = [
          "${modulesPath}/network"
          "${modulesPath}/ssh"
          "${modulesPath}/hardware.nix"
          "${modulesPath}/kernel"
          "${modulesPath}/outputs/tftpboot.nix"
          "${modulesPath}/outputs.nix"
        ];
        nixpkgs.buildPlatform = builtins.currentSystem;
        services = {
          # In this situation, we fallback to the appro VLAN.
          # TODO: add support for the admin VLAN.
          # Simplest DHCPv4 we can find.
          dhcpv4 = svc.network.dhcp.client.build {
            interface = config.hardware.networkInterfaces.lan;
          };
          inherit (config.services) sshd;
          defaultroute4 = svc.network.route.build {
            via = "$(output ${config.services.dhcpv4} router)";
            target = "default";
            dependencies = [ config.services.dhcpv4 ];
          };
        };

        defaultProfile.packages = [ mtdutils ];
        # Only keep root, which should inherit from DGN access control's root permissions.
        users.root = config.users.root;
      };
    })
  ];
}