degov-8.x-2.0/modules/degov_eu_cookie_compliance/degov_eu_cookie_compliance.install

<?php

use Drupal\Core\Session\AccountInterface;

/**
 * Implements hook_install().
 */
function degov_eu_cookie_compliance_install() {
  //give anonymous the permission to view the cookie popup
  user_role_grant_permissions(AccountInterface::ANONYMOUS_ROLE, ['display eu cookie compliance popup']);
}