[Zope3-dev] Re: RFC: Known working sets

[Philipp von Weitershausen]

On 4 Sep 2007, at 19:15 , Dieter Maurer wrote:
> Chris Withers wrote at 2007-9-4 09:15 +0100:
>> Philipp von Weitershausen wrote:
>>> As far as I understand your use case, i twould already be covered  
>>> by my
>>> original proposal: you always have the option to locally override  
>>> what's
>>> specified in the working set.
>>
>> I think Dieter may have meant something like:
>>
>>   [grok-0.11]
>>   grok = 0.11
>>   ZODB = 3.8.0-3.8.4
>>   zope.component = 3.4.0,3.5.1,3.5.2
>
> I think this "orthogonal" description may not be strict enough --
> as the testing effort grows exponentially.
>
> Usually, you have tested a few sets, say a single one
>
>    grok 0.11, ZODB 2.8.9, zope.component = 2.4.0
>
> Now, I must integrate "grok 0.11" with a component that
> requires ZODB 2.9.0 and zope.component 2.5.2.
>
> I run the tests and can then say:
>
>    grok 0.11 works also with "ZODB 2.9.0" and "zope.component 2.5.2".
>
> But I do not know (without explicit testing) that
>
>    "grok 0.11, ZODB 2.8.9, zope.component 2.5.2" is
>    a working set as well.
>
> Thus, the knowledge based on the two tests cannot be
> expressed by
>
> grok = 0.11
> ZODB = 2.8.9, 2.9.0
> zope.component = 2.4.0, 2.5.2

Yup, which is why I think it's ok to constrain oneself to *one*  
working set for now. If we can make that work somehow, I'd already be  
happy...