Cannot create DateTime from StdTimePoint

I cannot create a QDateTime object from a std TimePoint:

QDateTime::fromStdTimePoint(std::chrono::system_clock::now())

This snippet does not compile on Windows, because of the constraints:

requires(const std::chrono::time_point<Clock, Duration> &t) {
    // the clock can be converted to system_clock
    std::chrono::clock_cast<std::chrono::system_clock>(t);
    // the duration can be converted to milliseconds
    requires std::is_convertible_v<Duration, std::chrono::milliseconds>;
} 

The Duration type of the system clock's time point is implementation defined. In may case (VS2022) it is probably larger than std::chrono::milliseconds, so it cannot be implicitly converted.

Since the implementation uses a std::chrono::time_point_cast anyways, maybe the constraint can be dropped (or maybe use the time_point_cast inside the requires clause).