IANAL, but if the license isn’t materially compatible (which perhaps is the case for LGPL and MPL, I don’t know MPL enough to say), I would imagine this is the

IANAL, but if the license isn’t materially compatible (which perhaps is the case for LGPL and MPL, I don’t know MPL enough to say), I would imagine this is the only legal way to do it. When I contribute to a project, I release my code on the agreed upon license. You can’t change that without my permission.