It will be removed in qt6

src/KBruch.cpp

@@ -21,7 +21,9 @@
 #include <KLocalizedString>
 
 /* these includes are needed for Qt support */
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <Kdelibs4ConfigMigrator>
+#endif
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QObject>
@@ -31,18 +33,20 @@ int main(int argc, char * argv[])
 {
     // init random generator
     qsrand(time(nullptr));
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 #endif
     QApplication app(argc, argv);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     app.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
-
+#endif
     KLocalizedString::setApplicationDomain("kbruch");
-
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     Kdelibs4ConfigMigrator migrate(QStringLiteral("kbruch"));
     migrate.setConfigFiles(QStringList() << QStringLiteral("kbruchrc"));
     migrate.setUiFiles(QStringList() << QStringLiteral("AppMenuWidgetui.rc") <<  QStringLiteral("FractionRingWidgetui.rc") << QStringLiteral("kbruchui.rc"));
     migrate.migrate();
+#endif
 
 
     /* fill the about data; the common KDE about dialog will show it to the