the question how KDE is achieving to unblock the soft block on bluetooth (even without this package being installed) did not become clarified to me. :-(
I'm not a qml expert, but it should do in this way(from Toolbar.qml):
------------------------------------------------------------------------------------
var enable =
!btManager.bluetoothOperational;
btManager.bluetoothBlocked = !enable;
for (var i = 0; i <
btManager.adapters.length; ++i) {
var adapter = btManager.adapters[i];
adapter.powered = enable;
}
------------------------------------------------------------------------------------
-- Saluti, Luca Pedrielli