Using qt59 instead of qt5 (latest release)

[Vincent Habchi]

Hi there,

I recently wanted to experiment with linking one of the ports I maintain (Qgis3) with QT 5.9, if only to find out if 5.10 wasn’t the source of all the glitches and crashes everyone experiences with that application. 

However, in order to do so, I’d have to rebuild several dependents such as py36-qt5 or qwt-qt5 (inter alia). Are those able to deal with a Qt5 version other than the last one?

TIA,
Vincent