Just to make it clear, I don’t want Rhino3dmIO to be run in a .NET Core App. I currently only want to target Xamarin.Mac. I just want to reference assemblies that are built targeting .NET Standard.
As far as I know, I can not use references to those assemblies, when using the “Xamarin.Mac Full” target framework. But when I use the “Xamarin.Mac Modern” target framework, I am able to reference assemblies that are built targeting .NET Standard 2.0. You can find some documentation on Xamarin.Mac target frameworks at https://developer.xamarin.com/guides/mac/advanced_topics/target-framework/ and https://kb.xamarin.com/guides/mac/deployment,_testing,_and_metrics/performance/ recommends to use the modern target framework.
So my request would be for Rhino3dmIO to support the “Xamarin.Mac Modern” framework since I only want to reference Rhino3dmIO from the Mac app. The .NET Standard assemblies are referenced by the Mac app but do not need a reference to Rhino3dmIO.