XWayland Nukes The NVIDIA EGLStream Backend

XWayland had targeted both the Generic Buffer Management (GBM) and EGLStream APIs due to NVIDIA not supporting GBM like all of the other Linux drivers. But now that the NVIDIA proprietary Linux graphics driver has been boasting GBM support and advancing with their Wayland platform support in general, XWayland is letting go of the EGLStream mess...