partitioning a moving target

[Avi Bryant]

Should we be doing our partioning work based on Squeak 3.8 or 3.9a? 
Either way we have to deal with moving target issues; the question is
whether we want to have a stable base while we do the bulk of the
work, and then have to update to match 3.9, or whether we want to have
the ground constantly pulled out from beneath us by the new updates in
the 3.9a stream.

Or is there some third option?

Avi