Required Import Statements and Unresolved Identifiers in `Running Linux in a Virtual Machine`

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Created Sep ’22

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Apple Docs describe how to create a Swift executable to run Linux on an Intel based Mac, but the docs don't include the import statements required for the code to compile. I've determined I need to import both Cocoa and Virtualization but the following code from the final section Instantiate and Start the Virtual Machine is still generating an error:

let virtualMachine = VZVirtualMachine(configuration: configuration)

let delegate = Delegate()   // Cannot find 'Delegate' in scope
virtualMachine.delegate = delegate

How do I resolve the Delegate() constructor?

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DTS Engineer OP

Apple

Sep ’22

Accepted Answer

Delegate is a class that you create. It’s expected to conform to the VZVirtualMachineDelegate protocol. The VM will call various methods from that protocol on the delegate.

Delegation like this is a fundamental concept in Cocoa. See the Delegates and Data Sources section in the Cocoa Fundamentals Guide.

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