Updating nvidia-driver to 346.xx, and split separate nvidia-340 source package?

[Vincent Cheng]

Hi Andreas (and everyone else following on the list),

Is there a documented process on how to update and split a separate
legacy driver package? Aside from actually creating and uploading a
new "nvidia-graphics-drivers-legacy-340xx" source package, what other
packages need to be updated in lockstep?

Regards,
Vincent