install_finished

install_finished(&$install_state)

function install_finished(&$install_state) {
  $profile = drupal_get_profile();

  // Installation profiles are always loaded last.
  module_set_weight($profile, 1000);

  // Build the router once after installing all modules.
  // This would normally happen upon KernelEvents::TERMINATE, but since the
  // installer does not use an HttpKernel, that event is never triggered.
  \Drupal::service('router.builder')->rebuild();

  // Run cron to populate update status tables (if available) so that users
  // will be warned if they've installed an out of date Drupal version.
  // Will also trigger indexing of profile-supplied content or feeds.
  \Drupal::service('cron')->run();

  if ($install_state['interactive']) {
    // Load current user and perform final login tasks.
    // This has to be done after drupal_flush_all_caches()
    // to avoid session regeneration.
    $account = User::load(1);
    user_login_finalize($account);
  }

  $success_message = t('Congratulations, you installed @drupal!', array(
    '@drupal' => drupal_install_profile_distribution_name(),
  ));
  drupal_set_message($success_message);
}