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Running an older version of macOS, which supports older versions of Xcode and then using that to run older iOS simulators.


Isn't the simulator not a VM? I thought it was more something like wine.


Correct, the simulators run regular macOS processes that are linked against a different set of userland libraries than usual. No virtualization involved.


Could I run an older version of macOS that still ran 32bit apps?


macOS Mojave is the last version to support 32-bit applications. It only runs on x86_64, so you'd be emulating it, not virtualising.




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