I checked nuget and the RhinoMac package is not available in nuget. This is annoying as if we need to build using the installed version of rhino but that may conflict with the version we want to build against.
Thanks @dale
I was following this guide: Rhino - Loading Tool Palettes (Mac) but as we are building our plugin against an older version of Rhino (for maximum compatibility) we cannot use the locally installed Rhino. Also in our jenkins pipeline we would need to make sure that the build runs on agents that have.
We would need the assembly that is referenced there.