gnucash and GPLv3

[Brett]

> > Can parts of GnuCash be distributed under GPL v2 or
> later while others
> > are distributed as GPL v2 only? Are these two
> licensing options
> > compatible? I'm just raising this because of the
> recent thread (
> > http://lists.gnucash.org/pipermail/gnucash-devel/2010-January/thread.html#27208
> > ).

On http://www.gnu.org/licenses/rms-why-gplv3.html :
"When we say that GPLv2 and GPLv3 are incompatible, it means there is no legal way to combine code under GPLv2 with code under GPLv3 in a single program. This is because both GPLv2 and GPLv3 are copyleft licenses: each of them says, “If you include code under this license in a larger program, the larger program must be under this license too.” There is no way to make them compatible. We could add a GPLv2-compatibility clause to GPLv3, but it wouldn't do the job, because GPLv2 would need a similar clause."