[Distutils] pkg_resources.declare_namespace vs pkgutil.extend_path

[Jim Fulton]

We currently have two ways of implementing namespace packages,

   pkg_resources.declare_namespace vs pkgutil.extend_path

Do we need 2?

What does pkg_resources.declare_namespace do that pkgutil.extend_path  
does, other than provide zip file support?  Can we consolidate them  
somehow?

Jim

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