for example, I have a set defined as opengl, and a variable called glfw within that set. Now when I try to set $(#glfw) as my location for glfw when starting a project, it doesn't accept it, but if that variable is defined within the default set, it will accept it.
My question is how do I qualify that the name belongs to that set. I tried $(#opengl.glfw) but that doesn't work (because that is really reserved for the lib or include subdirectory.