Quote Originally Posted by dee. View Post
Of course he can use it himself. If it's under GPL, he just has to fork his own project, so that it stays under GPL. A GPL-licensed software cannot be fully closed - if Canonical owns the copyright to it, they can only "close" it so that the next version they release would be proprietary, but the last GPL-released version would still be under GPL and anyone can fork or use it under GPL.

The GPL is designed specifically to prevent the code being closed. So anyone can use it as long as they keep it under GPL - no matter who "owns" the code.
Obviously he probably don't even need to fork it, only write the backend. But the project was sold as "in future wayland compatible" a years ago and I suppose something like that could have impacted the choice of project to use.