The Magma Eclipse plugin currently creates linked source folders for sources of Magma dependencies. This gives AJDT the ability to properly resolve all Magma aspects, ITDs, and also to weave in user's own aspects.
When a project in the workspace is added as a dependency, however, only the binary output folder of the project is exposed to AJDT, giving access only to stuff already weaved there, but not using aspects in that project or giving the ability to weave into it.
AJDT only offers ways to add the project to the inpath or to the aspectpath, as opposed to a LTW-like environment.
So, we need linked sources also for those projects.