Let's say Physics3D or Physics2D. I assume there's code to detect if those are installed. I believe that it would need to be a "#if" like the platform compilation directives in order to be usable. https://docs.unity3d.com/Manual/PlatformDependentCompilation.html What I'm trying to do is make sure that Physics code in my plugin (Master Audio) doesn't try to compile if physics package is disabled. Is it possible? Thanks in advance!