https://gitlab.com/accounts-sso/signond/-/merge_requests/36

From 65a9af6663738c5e169a1779b8d0106c6223e96e Mon Sep 17 00:00:00 2001
From: Nicolas Fella <nicolas.fella@gmx.de>
Date: Tue, 5 Jul 2022 17:36:19 +0200
Subject: [PATCH 01/11] Don't forward-declare QStringList

It doesn't work with Qt6
---
 lib/plugins/SignOn/authpluginif.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/plugins/SignOn/authpluginif.h b/lib/plugins/SignOn/authpluginif.h
index 7b3243c..9cfc527 100644
--- a/lib/plugins/SignOn/authpluginif.h
+++ b/lib/plugins/SignOn/authpluginif.h
@@ -31,6 +31,7 @@
 #include <QtCore/qobject.h>
 #include <QtCore/qpointer.h>
 #include <QtCore/qplugin.h>
+#include <QtCore/qstringlist.h>
 
 #include <QVariantMap>
 #include <SignOn/sessiondata.h>
@@ -39,7 +40,6 @@
 
 QT_BEGIN_NAMESPACE
 class QString;
-class QStringList;
 class QByteArray;
 class QVariant;
 QT_END_NAMESPACE
-- 
2.43.0