On 02.02.2011, at 18:44, Chris Muller wrote:

> Ok, I've studied our update code, but have a couple of questions.
> 
> First, what is the "Squeak-Version" package about?  Is it merely to
> declare which update number we're at?  I didn't see where this has any
> bearing on the actual update processing.

It's only there to keep the "update number" increasing monotonically.

> I've copied the update-ar.1.mcm configuration to the new 4.2
> repository, but I don't see whether any further change is needed.

You should instead take the latest trunk update map, update it with the actual release packages, and then save to the release repo.

>  The
> "1" version number of the mcm configuration file is only used to
> filter out all of the "update-xxx.mcm" files with a lower version
> number (minVersion), but since we only have one configuration that is
> not used.

Yes, starting over at 1 is fine.

> Then there is MCMcmUpdater's "LastUpdateMap" class variable.  This
> gives us the minVersion update number for a particular repository but,
> in my image, both #'s (for 'trunk' and for '4.1') are very low.

Those numbers are unrelated. One is a sequential number of MCMs, the other the sum of all package version numbers.

- Bert -