After more research about the dependencies around the Xamarin.iOS ecosystem I am pretty sure that I have hit a wall of dominos 5-deep. It goes like this:
VS2019 Community for Mac 8.10.11 (8) comes with --> Xamarin.iOS 15.0.0.6 needs --> Xcode 13 needs --> macOS Big Sur 11.3 needs --> *(some iMac)* My iMac is a 27-inch, Late 2013, 3.2GHz i5 running Catalina 10.15.7 and I am not being offered or allowed any more OS updates. I've asked a Genius friend to confirm this. If true, then I actually have hit the wall and will need a new Mac. If I could downgrade to Xamarin.iOS 14.14 then everything would be back in-range again, but apparently that would require downgrading VS2019 as well and it gets really messy. *Greg K* >
