[Zope-dev] A summary of "Interfaces vs ZCA concepts"

[Chris McDonough]

Martijn Faassen wrote:
> Chris McDonough wrote:
>> I'll throw out the obvious...
>>
>> Why not subclass Interface in zope.component and make the required API 
>> additions there?  If it were anybody but us thinking about doing this, they'd 
>> probably just subclass.
> 
> Because then we'd need to rebase all our interfaces to be able to use 
> the new feature, making it pretty useless as a handy shortcut.

I guess the counterargument is that you need to change your code anyway to make 
use of the new feature.  So what's the difference?

- C