[Zope] Context in a view doesn't see marker interface

[Eric Steele]

For a project I'm working on, I need to include the (Plone) content  
object that a view is called on in the view template, so if I call  
mysite/someObject/@@myview, I'll see the someObject page rendered with  
some extra bits, mostly through overridden (or additional) viewlets  
defined solely for the interface provided by my view.

If I include something along the lines of <tal:block  
tal:replace="structure context" /> in my view template, someObject  
renders in the browser. The problem is that none of what's in there  
appears to recognize the interface that my view provides.

Do I need to do some sort of context wrapping?

(I also had some success creating a page template on the fly,  
injecting the current content object's template code into it along  
with whatever else I wanted to display, but that just feels icky and  
runs afoul of the restriction against python:test calls in views when  
calling it on folders and events).

Eric