There was an ask to have the following scenario:
- A Unity project that references an MSBuild project
- The MSBuild project compiles a source file that depends on Unity concept
- This source file isn't compiled by Unity
- The output of this MSBuild is brought into Unity
Support for this could be as minimum as setting up a proper sample based on existing capabilities, or we can look into doing something more here.
Hacked up sample is #61, request originated in #44.