Take the bitter truth @bittersweet told so sweetly.

Add this: If you want great software developers, don't put them into a dark room and teach them the theory of software development. Teach them the longing for the wide and endless space of possibilities.
> Quote after Antoine de Saint-Exupéry

So basically give them practical problems which them to desire the theory. Provide an integration of open source contributions into education. Online and offline.