[Savannah-hackers] GNU GPL plug-in for Eclipse

[Sylvain Beucler]

Hello,

I recently approved this project:
https://savannah.nongnu.org/projects/cashew-s

I told the user it was possible to write a plug-in for Eclipse (under
the Eclipse Public License) and release it under the GNU GPL using an
exception as described at
http://www.gnu.org/licenses/gpl-faq.html#GPLPluginsInNF
http://www.gnu.org/licenses/gpl-faq.html#GPLIncompatibleLibs

My approval is here:
http://lists.gnu.org/archive/html/savannah-hackers/2004-11/msg00550.html

However, I now wonder whether such linking is possible.

Let's consider an hypothetical license "anti-GPL" that permits any
kind of use except combinaison with GNU GPL'd program. If I release a
GPL'd plug-in for a piece of software released under the anti-GPL,
adding an exception to my plug-in will not be enough to combine the
two programs.

So my questions are:
- Is using an exception enough to combine any GPL-incompatible
  software with GPL'd software?
- If not, is it possible to release an GPL'd plug-in for Eclipse?

Thanks,

-- 
Sylvain