Pure dependency project

[Steve Chernyak]

I have a multi module project that I would like to declare as a dependency
of another project.
-Project 1:
--Module A
--Module B

-Project 2

Modules A and B do not depend on each other. However, I would like project 2
to depend on both modules. Is there a way to create Module C in Project 1
whose only purpose is to group Modules A and B. I could then depend on
Module C only from Project 2?

Thanks