Re: [GENERAL] PostgreSQL Licence: GNU/GPL

Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Anyway, let's look at it this way.  If we allow for proprietary versions
> of PostgreSQL, it is hard to imagine why we couldn't make a GPL version
> _without_ the agreement of past contributors.  We have to keep the BSD
> part about giving credit and no sueing, but we can clearly _add_ the GPL
> cruft if we wanted to and all current/future developers agree.  It is
> basically a GPL fork of PostgreSQL, rather than a proprietary fork.

Well, (a) not all current developers will agree, (b) you need to get
past developers in there too, and (c) I'm not as sure as you are that
we can simply plaster GPL on top of BSD-licensed code.  The GPL does
not like merging GPL code with not-GPL code, free or otherwise.  See

     b) You must cause any work that you distribute or publish, that in
     whole or in part contains or is derived from the Program or any
     part thereof, to be licensed as a whole at no charge to all third
                         ^^^^^^^^^^^^^^^^^^^
     parties under the terms of this License.
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This is the "viral" aspect of GPL that so many people have complained of.

But wait a sec; the last thing we need here is yet another license
discussion.  Given that the objective of this FAQ addition is to prevent
future license flamewars, I think the last thing we want it to do is
give any suggestion that GPL-izing the code might actually be feasible.
Why are you so eager to suggest that that might be possible?

            regards, tom lane