Fix more compile error against qt6

src/private/dbus.cpp

@@ -56,8 +56,11 @@ std::optional<DBus::AgentService> DBus::parseAgentServiceName(const QString &ser
     if (!serviceName.startsWith(AKONADI_DBUS_SERVER_SERVICE ".")) {
         return std::nullopt;
     }
-
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     const auto parts = serviceName.midRef(QStringView(AKONADI_DBUS_SERVER_SERVICE ".").length()).split(QLatin1Char('.'));
+#else
+    const auto parts = QStringView(serviceName).mid(QStringView(AKONADI_DBUS_SERVER_SERVICE ".").length()).split(QLatin1Char('.'));
+#endif
     if ((parts.size() == 2 && !Akonadi::Instance::hasIdentifier())
         || (parts.size() == 3 && Akonadi::Instance::hasIdentifier() && Akonadi::Instance::identifier() == parts.at(2))) {
         // switch on parts.at( 0 )
@@ -117,7 +120,11 @@ std::optional<QString> DBus::parseInstanceIdentifier(const QString &serviceName)
     }
 
     if (serviceName.startsWith(QStringView{AKONADI_DBUS_SERVER_SERVICE})) {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
         const auto split = serviceName.splitRef(QLatin1Char('.'));
+#else
+        const auto split = QStringView(serviceName).split(QLatin1Char('.'));
+#endif
         if (split.size() <= 3) {
             return std::nullopt;
         }

src/private/imapset.cpp

@@ -160,13 +160,13 @@ ImapSet::ImapSet(Id id)
 {
     add(QVector<Id>() << id);
 }
-
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 ImapSet::ImapSet(const QVector<qint64> &ids)
     : d(new ImapSetPrivate)
 {
     add(ids);
 }
-
+#endif
 ImapSet::ImapSet(const QList<qint64> &ids)
     : d(new ImapSetPrivate)
 {
@@ -208,12 +208,12 @@ bool ImapSet::operator==(const ImapSet &other) const
 {
     return d->intervals == other.d->intervals;
 }
-
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 void ImapSet::add(const QVector<Id> &values)
 {
     d->add(values);
 }
-
+#endif
 void ImapSet::add(const QList<Id> &values)
 {
     d->add(values);

src/private/imapset_p.h

@@ -147,7 +147,9 @@ public:
 
     ImapSet(qint64 Id); // krazy:exclude=explicit
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     ImapSet(const QVector<qint64> &ids); // krazy:exclude=explicit
+#endif
 
     ImapSet(const QList<qint64> &ids); // krazy:exclude=explicit
 
@@ -181,7 +183,9 @@ public:
       No interval merging is performed.
       @param values List of positive integer numbers in arbitrary order
     */
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     void add(const QVector<Id> &values);
+#endif
     void add(const QList<Id> &values);
 
     /**