Unity and MVC–Resolving types challenge

Imagine you have a situation like this:

2 MVC controllers (A and B) have a dependency on SvcA**. SvcA has a dependency on SvcB and a component implementing IX.SvcB has a dependency on something implementing IY.

Every time the system resolves CtrlA we want to provide Y1 and every time it resolves CtrlB, we want to provide Y2.

Something like this:

and

How would you configure Unity to solve this?

No “if() else” allowed. System supplies its own MVC’s ControllerFactory. (via ControllerBuilder.Current.SetControllerFactory) . Ideally, we want the ControllerFactory to have no knowledge of any of these specific components.

Some help: read Chris’s blog and Unity docs.