install_base_system

install_base_system(&$install_state)

function install_base_system(&$install_state) {
  // Install system.module.
  drupal_install_system($install_state);

  // Call file_ensure_htaccess() to ensure that all of Drupal's standard
  // directories (e.g., the public files directory and config directory) have
  // appropriate .htaccess files. These directories will have already been
  // created by this point in the installer, since Drupal creates them during
  // the install_verify_requirements() task. Note that we cannot call
  // file_ensure_access() any earlier than this, since it relies on
  // system.module in order to work.
  file_ensure_htaccess();

  // Prime the drupal_get_filename() static cache with the user module's
  // exact location.
  // @todo Remove as part of https://www.drupal.org/node/2186491
  drupal_get_filename('module', 'user', 'core/modules/user/user.info.yml');

  // Enable the user module so that sessions can be recorded during the
  // upcoming bootstrap step.
  \Drupal::service('module_installer')->install(array('user'), FALSE);

  // Save the list of other modules to install for the upcoming tasks.
  // State can be set to the database now that system.module is installed.
  $modules = $install_state['profile_info']['dependencies'];

  \Drupal::state()->set('install_profile_modules', array_diff($modules, array('system')));
  $install_state['base_system_verified'] = TRUE;
}