From 652af71a9c4af06657422a877f8526fce3f0e50c Mon Sep 17 00:00:00 2001
From: Vasilito <adminpupkin@gmail.com>
Date: Wed, 6 May 2026 13:49:52 +0100
Subject: [PATCH] =?UTF-8?q?fix:=20kded6=20uses=20offscreen=20QPA=20on=20Re?=
 =?UTF-8?q?dox=20=E2=80=94=20Qt6=20Wayland=20crashes=20at=20null+8?=
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kded6's detectPlatform() forces QT_QPA_PLATFORM=wayland regardless
of external environment. On Redox, Qt6 Wayland QPA crashes during
wl_registry init (page fault at null+8). kded6 is a headless
D-Bus daemon — it does not need Wayland.

Added #ifdef Q_OS_REDOX guard: use 'offscreen' instead of 'wayland'.
Combined with libwayland null guards, this provides defense in depth
against the Qt6 Wayland crash on Redox.
---
 local/recipes/kde/kf6-kded6/source/src/kded.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/local/recipes/kde/kf6-kded6/source/src/kded.cpp b/local/recipes/kde/kf6-kded6/source/src/kded.cpp
index 0bae98e43..9d5d051a7 100644
--- a/local/recipes/kde/kf6-kded6/source/src/kded.cpp
+++ b/local/recipes/kde/kf6-kded6/source/src/kded.cpp
@@ -575,7 +575,13 @@ static bool detectPlatform(int argc, char **argv)
         return false;
     }
     if (qstrcmp(sessionType.data(), "wayland") == 0) {
+#ifdef Q_OS_REDOX
+        // Qt6 Wayland QPA crashes at null+8 during wl_registry init on Redox.
+        // kded6 is a headless D-Bus daemon — use offscreen platform instead.
+        qputenv("QT_QPA_PLATFORM", "offscreen");
+#else
         qputenv("QT_QPA_PLATFORM", "wayland");
+#endif
         return true;
     } else if (qstrcmp(sessionType.data(), "x11") == 0) {
         qputenv("QT_QPA_PLATFORM", "xcb");