[m2e-users] Attaching source to the 'Plugin Dependencies'

[Benson Margulies <bimargulies@xxxxxxxxx>]

So, I'm working on a plugin that lists eclipsecs as a dependency.

the eclipsecs plugin does not have source attached.

If I attempt to use the usual eclipse mechanisms to point to the
source, I'm presented with:

The current class path entry belongs to container 'Plug-in
Dependencies' which does not allow user modifications to source
attachments on its entries.

Is there a way around this?