drupal_required_modules

drupal_required_modules()

function drupal_required_modules() {
  $listing = new ExtensionDiscovery(\Drupal::root());
  $files = $listing->scan('module');
  $required = array();

  // Unless called by the installer, an installation profile is required and
  // must always be loaded. drupal_get_profile() also returns the installation
  // profile in the installer, but only after it has been selected.
  if ($profile = drupal_get_profile()) {
    $required[] = $profile;
  }

  foreach ($files as $name => $file) {
    $info = \Drupal::service('info_parser')->parse($file->getPathname());
    if (!empty($info) && !empty($info['required']) && $info['required']) {
      $required[] = $name;
    }
  }

  return $required;
}