I have now a QHY174 with GPS receiver included, but there is only a single Windows software (SharpCap) that appears to support the GPS insertion in the SER file.
I tested the camera successfully with INDI, but of course there is no GPS support for the camera. Of course this feature is very specific, but it would make INDI a very powerful tool for time-critical applications (such as stellar occultations).
I am ready to offer my collaboration for testing, if somebody can take some time to include the required feature in the driver.