// package "a" build) to the package "c" run action, so
			// that it can be incorporated with "c"'s regular
			// metadata. To do this, we add edges from each compile
			// action to a "writeCoverMeta" action, then from the
			// writeCoverMeta action to each run action. Updated
			// graph:
			//
			//	build("a")       build("b")         build("c")
			//	    |   \       /   |               /   |