building dependent (multi)-projects

[Nigel Magnay]

I have a set of M2 projects that depend on each other:

     A
     |
     B
    / \
   X   Y

What I'd like is that if project Y changes, then Y gets built
automatically; if successful then B (because a dependency has
changed), then A. (A is the project installer in this instance)

Is this something that continuum can do, or am I better off sticking
to a 'master build' type affair with cruisecontrol ?