[squeak-dev] Re: MC fix-while-compiling broken

David T. Lewis lewis at mail.msen.com
Wed Apr 28 02:46:23 UTC 2010

On Tue, Apr 27, 2010 at 06:53:42PM -0700, Andreas Raab wrote:
> On 4/27/2010 6:42 PM, David T. Lewis wrote:
> >Hmm... is this because I have a series of update maps in SqS/VMMaker, and
> >the MCMcmUpdate tries to load them all in sequence? The earlier maps would
> >point to versions of VMMaker that still have the "- 16" syntax problem.
> >
> >So I probably should just delete the old versions of update-dtl.N.mcm,
> >right?
> You should probably not issue any config map updates except the very 
> first one. The reason being that each config map is considered a 
> "package checkpoint" where these specific versions of the packages have 
> to be present in the image before the updater continues.
> This is critical if we have brutal changes like the closure stuff, but 
> is only confusing when it comes to a package like VMMaker that almost 
> never has life instances to worry about. The updater *always* updates 
> the last configuration found to the latest package version in the 
> repository so a single MCM can be used for a long time until you either 
> add a package, or remove a package, or need a package checkpoint.

Thanks for the explanation. I deleted all but the most recent config
map file which should resolve the "- 16" syntax issue for loading
VMMaker into fresh 4.1 images, hopefully without confusing the MC
caches for everyone else.


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