-                       'calendar' => [
-                               'calendar' => '%env(string:RAPSYSAIR_CALENDAR)',
-                               'prefix' => '%env(string:RAPSYSAIR_PREFIX)',
-                               'project' => '%env(string:RAPSYSAIR_PROJECT)',
-                               'client' => '%env(string:GOOGLE_CLIENT_ID)',
-                               'secret' => '%env(string:GOOGLE_CLIENT_SECRET)'
-                       ],
-                       'copy' => [
-                               'by' => 'Created by Raphaël',
-                               'link' => 'https://rapsys.eu',
-                               'long' => 'All rights reserved',
-                               'short' => 'Copyright 2019-2021',
-                               'title' => 'Rapsys'
+                       //XXX: revert to underscore because of that shit:
+                       //XXX: see https://symfony.com/doc/current/components/config/definition.html#normalization
+                       //XXX: see https://github.com/symfony/symfony/issues/7405
+                       //TODO: copy to '%rapsysuser.languages%',
+                       'languages' => [
+                               'en_gb' => 'English'