On Jan 13, 2012, at 11:14 PM, Henrik Johansen wrote:

> 
> On Jan 13, 2012, at 9:44 30PM, Stéphane Ducasse wrote:
> 
>> 
>>> (but have a backwards-compatible external package)
>> 
>> I think that it will be difficult enough to swap the two events notification 
>> systems
>> and that we will not make a backward compatible package. I think that for 
>> migrating the few users will just have to 
>> register to the new one. Now give me 10 full time engineers and we do it.
>> At the end of the day, we should do some reality checks and put resources on 
>> the right items.
>> 
>> Stef
> 
> I'm talking of existing external users of the SystemChangeNotifier, like 
> (assumption on my part) OCompletion, OB, Coral and others.
> Implementing a backwards-compatible protocol as one of the steps shouldn't be 
> too hard, is probably needed to keep the system running while swapping out 
> the existing one anyways, and will ease migration of the external packages by 
> keeping them loadable with the backwards-compat package in in image.
> 
> To avoid another rant of getting legs kicked out from under one as part of an 
> upgrade, and provide a generally pleasant upgrade experience for everyone, I 
> think it is crucial.

I know now this is a question of energy/time.


> If I can make it in May, I'll work on it.

Thanks

> 
> Cheers,
> Henry


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