Hello, >instead. From this, I take that I have to use "export QT_SELECT = 5" in >d/rules; but what are then my required build dependencies? Just >qtchooser? Or do I need to install any qt5 development package as well? I think qtbase5-dev is the minimum dependency you need to install, but I'm not sure anymore, I remember asking Lisandro a while ago and getting his working answer back (you can have a look at src:qviaggiatreno in case) G.