I filed this issue too: https://qt-project.atlassian.net/browse/QTBUG-150742 - a suggestion to add support for unix sockets in the SatelliteSource object, which would mean no need to pipe gnss-share output. I would really like for someone to confirm if the sattlitesInView list is empty - I have not been able to fix that, and I consider filing an issue for that as well.