Using viewlets (and views) in third-party products

Martin Aspeli optilude at
Mon Aug 27 19:03:51 UTC 2007

Wichert Akkerman wrote:
> Previously Martin Aspeli wrote:
>> Wichert Akkerman wrote:
>>> Previously Martin Aspeli wrote:
>>>> Wichert Akkerman wrote:
>>>>> Perhaps it can more generic. Basically both are instances of a 'only 
>>>>> apply X when condition Y is satisfied'. Y in this case is either a 
>>>>> specific skin being selected or a product being installed. Would it be 
>>>>> possible to have a generic 'only use if feature X is here' framework in 
>>>>> place? That could be added to plone.theme instead of creating another 
>>>>> package that hooks into the same places as well.
>>>> Is that an endorsement for having a generalisation of this in 
>>>> plone.theme, and having that included in 3.0.x rather than 3.5?
>>> No, but it is an endorsement for a 2.0 version of plone.theme which
>>> supports that. People who need it can then use that instead of the
>>> plone.theme that is shipped with Plone 3.0.
>> There is a slight problem here, in that plone.recipe.plone (currently) 
>> uses == type dependencies for all the eggs, to make sure we get a "known 
>> good" distribution of Plone, including all dependencies. This is because 
>> setuptools/buildout is a bit trigger happy with upgrades and we 
>> typically depend on all Plone packages being released simultaneously.
>> In fact, you *can* override, by passing an 'eggs' parameter to 
>> plone.recipe.plone, but I'm not sure what would happen if a product's 
>> depends on a newer version of a core plone package.
> I think you'll have to use a versions section in your buildout. I use
> those for grok projects and they work well there.

Can you elaborate?


Acquisition is a jealous mistress

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