If jolla-keyboard could communicate with the Presage engine without linking it directly (e.g. via D-Bus), then Presage’s GPLv2 licence shouldn’t be a problem.
But guys! (Just before investing any expensive time in this area).
Did anyone contacted with Matteo Vescovi (orignal presage author) about a licensing change proposal?
If not than I am more than happy to ask him kindly. What license requirement does Jolla have on integration?
I am not into the licensing business, so if anyone could summarise the reason of the change than it would be helpful.