XPC and cross-architecture OSX applications
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for a desktop application I am developing, I have to stick with a 32-bit framework. I am looking for the best path to run the framework in its proper process and develop the rest of the application in a 64-bit process. The application is also meant to be sold in the AppStore, so it should support Apple sandboxing.

I am thinking about [XPC][1]: is it suitable for these purposes? Why can't I find it in the Apple [documentation related to cross-architecture programming][2]?


  [1]: http://developer.apple.com/library/mac/#documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/CreatingXPCServices.html
  [2]: http://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/64bitPorting/Cross-ArchitecturePluginSupport/Cross-ArchitecturePluginSupport.html#//apple_ref/doc/uid/TP40001064-CH225-SW7