[sprash]

> I'm still a novice, but will all X programs need to be converted?

No. Because Wayland is fundamentally different from X the following won't ever work:

* Window managers

* Programs that need to know their absolute window coordinates

* Windows that want to draw to the root window

* Programs that want to capture the screen via XGetImage()

[anoncake]

> * Programs that need to know their absolute window coordinates

> * Windows that want to draw to the root window

Gnome certainly won't support it, but in principle a compositor could expose that functionality.

> * Programs that want to capture the screen via XGetImage()

Yeah, doing anything via XAnything() only works on X. So you replace XAnything() by somethingElse().