[plasma/plasma-workspace] startkde: startkde: Update LookAndFeelPackage in kdeglobals

Git commit 8932b46e20506f0b5aada06ef23ac22689d67504 by Vlad Zahorodnii.
Committed on 17/07/2026 at 10:24.
Pushed by vladz into branch 'master'.

startkde: Update LookAndFeelPackage in kdeglobals

This prevents the autoswitching module from potentially applying the new
global theme again.

M  +1    -0    startkde/CMakeLists.txt
M  +9    -4    startkde/startplasma.cpp

https://invent.kde.org/plasma/plasma-workspace/-/commit/8932b46e20506f0b5aada06ef23ac22689d67504

diff --git a/startkde/CMakeLists.txt b/startkde/CMakeLists.txt
index fd7b8cad11..d18998bd91 100644
--- a/startkde/CMakeLists.txt
+++ b/startkde/CMakeLists.txt
@@ -29,6 +29,7 @@ target_link_libraries(startplasma-wayland PRIVATE
 kconfig_target_kcfg_file(startplasma-wayland
     FILE ${CMAKE_SOURCE_DIR}/kcms/lookandfeel/lookandfeelsettings.kcfg
     CLASS_NAME LookAndFeelSettings
+    MUTATORS
 )
 
 add_subdirectory(plasma-session)
diff --git a/startkde/startplasma.cpp b/startkde/startplasma.cpp
index a7b81b6432..736817f53f 100644
--- a/startkde/startplasma.cpp
+++ b/startkde/startplasma.cpp
@@ -396,10 +396,8 @@ static std::optional<std::pair<QString, KLookAndFeelManager::Contents>> dayNight
     return std::make_pair(lookAndFeelName, KLookAndFeelManager::AppearanceSettings);
 }
 
-static std::pair<QString, KLookAndFeelManager::Contents> determineLookAndFeel()
+static std::pair<QString, KLookAndFeelManager::Contents> determineLookAndFeel(const LookAndFeelSettings &settings)
 {
-    const LookAndFeelSettings settings;
-
     if (settings.automaticLookAndFeel()) {
         if (const auto lookAndFeel = dayNightLookAndFeel(settings)) {
             return *lookAndFeel;
@@ -429,8 +427,15 @@ void setupPlasmaEnvironment()
     QDir().mkpath(extraConfigDir);
     qputenv("XDG_CONFIG_DIRS", QByteArray(QFile::encodeName(extraConfigDir) + ':' + currentConfigDirs));
 
-    const auto &[lookAndFeelName, lookAndFeelContents] = determineLookAndFeel();
+    LookAndFeelSettings lookAndFeelSettings;
+    const auto &[lookAndFeelName, lookAndFeelContents] = determineLookAndFeel(lookAndFeelSettings);
     qCDebug(PLASMA_STARTUP) << "Applying" << lookAndFeelName << "global theme";
+
+    if (lookAndFeelSettings.lookAndFeelPackage() != lookAndFeelName) {
+        lookAndFeelSettings.setLookAndFeelPackage(lookAndFeelName);
+        lookAndFeelSettings.save();
+    }
+
     QFile activeLnf(extraConfigDir + QLatin1String("/package"));
     if (!activeLnf.open(QIODevice::ReadOnly) || activeLnf.readLine() != lookAndFeelName.toUtf8()) {
         KPackage::Package package = KPackage::PackageLoader::self()->loadPackage(QStringLiteral("Plasma/LookAndFeel"), lookAndFeelName);