drupal/core/profiles/minimal/minimal.install

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

/**
 * Implements hook_install().
 *
 * Performs actions to set up the site for this profile.
 *
 * @see system_install()
 */
function minimal_install() {
  $default_theme = 'stark';

  // Allow visitor account creation, but with administrative approval.
  config('user.settings')->set('register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL)->save();

  // Enable default permissions for system roles.
  user_role_grant_permissions(DRUPAL_ANONYMOUS_RID, array('access content'));
  user_role_grant_permissions(DRUPAL_AUTHENTICATED_RID, array('access content'));
}