Comment 4 for bug 1299920

Yes, QT_SELECT shouldn't be set by default as it overrides the qt[4,5]-default package. It's just possible KDE people not only overrode PATH (which was now removed) but also set QT_SELECT somewhere else to force the selection, which also should not be needed anymore thanks to the fixes in Qt 4 and 5 packaging.

The reason KDE wanted to set the Qt 'development' settings is that they use qdbus, and it's also handled by qtchooser despite not being strictly development only tool.

I'd reassign this bug to some KDE package since I don't think there's anything to be done in qtbase, but then again I don't know if it's kde-workspace or something else that is setting the QT_SELECT now.