varbase-8.x-4.0-alpha1/varbase.install

<?php
/**
 * @file
 * Install, update and uninstall functions for the Varbase installation profile.
 */

use Drupal\user\Entity\User;
use Drupal\user\RoleInterface;

/**
 * Implements hook_install().
 *
 * Perform actions to set up the site for this profile.
 *
 * @see system_install()
 */
function varbase_install() {
  // Set front page to "node".
  \Drupal::configFactory()->getEditable('system.site')->set('page.front', '/node')->save(TRUE);

  // Assign user 1 the "administrator" role.
  $user = User::load(1);
  $user->roles[] = 'administrator';
  $user->save();

  // Restrict user registration to admin role creation
  \Drupal::configFactory()->getEditable('user.settings')->set('register', USER_REGISTER_ADMINISTRATORS_ONLY)->save(TRUE);

  // Allow authenticated users to use shortcuts.
  user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, ['access shortcuts']);

  // Allow all users to use search.
  user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, array('search content'));
  user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, array('search content'));

  // Enable the admin theme.
  \Drupal::configFactory()->getEditable('node.settings')->set('use_admin_theme', TRUE)->save(TRUE);
}