more cases of injection via t_d_s: https://github.com/pantsbuild/pants/blob/master/src/python/pants/backend/jvm/targets/javac_plugin.py#L21-L26 https://github.com/pantsbuild/pants/blob/master/src/python/pants/backend/jvm/subsystems/scala_platform.py#L192-L202 https://github.com/pantsbuild/pants/blob/master/src/python/pants/backend/python/targets/python_target.py#L144-L160