With MediaWiki master and GoogleLogin, when I run the installer with `install.php --with-extensions` the install dies:
```
Creating main page with default content
done
Creating tables for enabled extensions
ConfigException from line 136 of /workspace/src/includes/config/ConfigFactory.php: No registered builder available for googlelogin.
Backtrace:
#0 extensions/GoogleLogin/includes/GoogleLogin.php(46): ConfigFactory->makeConfig(string)
#1 extensions/GoogleLogin/includes/GoogleLoginHooks.php(20): GoogleLogin\GoogleLogin::getGLConfig()
#2 includes/Hooks.php(174): GoogleLogin\GoogleLoginHooks::onLoadExtensionSchemaUpdates(MysqlUpdater)
#3 includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL)
#4 includes/installer/DatabaseUpdater.php(127): Hooks::run(string, array)
#5 includes/installer/DatabaseUpdater.php(192): DatabaseUpdater->__construct(Wikimedia\Rdbms\DatabaseMysqli, boolean, NULL)
#6 includes/installer/DatabaseInstaller.php(312): DatabaseUpdater::newForDB(Wikimedia\Rdbms\DatabaseMysqli)
#7 includes/installer/Installer.php(1567): DatabaseInstaller->createExtensionTables(MysqlInstaller)
#8 includes/installer/CliInstaller.php(138): Installer->performInstallation(array, array)
#9 maintenance/install.php(125): CliInstaller->execute()
#10 maintenance/doMaintenance.php(94): CommandLineInstaller->execute()
#11 maintenance/install.php(175): require_once(string)
#12 {main}
```
That can be reproduced on a Gerrit change by commenting on a change: `check experimental`.