A "hello world" XM app gives the following:
ld: framework not found Vision
clang : error : linker command failed with exit code 1 (use -v to see invocation)
if you install a XM from the xcode9 lane and target xcode83 in debug.
Full Log: https://gist.github.com/chamons/332d6d034c598ab88c8a7e63069d6b6a
https://github.com/xamarin/xamarin-macios/pull/2502 appears to fix this.