From: | Stephen Frost <sfrost(at)snowman(dot)net> |
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To: | Bruce Momjian <bruce(at)momjian(dot)us> |
Cc: | Dave Page <dpage(at)pgadmin(dot)org>, Magnus Hagander <magnus(at)hagander(dot)net>, jd(at)commandprompt(dot)com, Greg Stark <gsstark(at)mit(dot)edu>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Smith <greg(at)2ndquadrant(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Michael Banck <mbanck(at)debian(dot)org>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Debian readline/libedit breakage |
Date: | 2011-02-17 15:36:10 |
Message-ID: | 20110217153610.GW4116@tamriel.snowman.net |
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Lists: | pgsql-hackers |
* Bruce Momjian (bruce(at)momjian(dot)us) wrote:
> Well, we are going down a slippery slope if we think the click-through
> installers are OK to use readline and distribute because we supply the
> source for the installers --- that then requires anyone using the
> binaries (or libraries) in those installers to also supply the source
> code, e.g. GPL.
If they build binaries which include the GPL'd readline, then there's a
(potential) issue, sure. I'm not sure what system you're looking at,
but readline isn't linked in by libpq today and I can't imagine it ever
being linked to it.
If they're using the binaries which the community provides, I really
don't believe there's any issue. It's possible someone would ask for
the source code for that psql binary, but that shouldn't/wouldn't be
hard for them to produce for the community psql.
If they're building their own binaries of psql which they've modified
*and* have linked in with readline, then they've put themselves into a
position where FSF or someone could complain. I'd recommend they not do
that, so as to avoid the issue.
> :-( I am not saying they have to, but falling back to
> the "oh we give source code for the click-through installers" is not a
> position we can fall back on without affecting our users.
I really don't follow the logic here. Are you suggesting that people
take psql and *embed* it into their own binaries?
If there's really that much concern over it, presumably the installers
could be built w/o readline support.
That'd probably be more comfortable for me anyway, since then psql on
Windows would behave like every other Windows app. ;) (j/k..)
> Also, I think part of the problem for Debian is that they distribute
> readline and Postgres because they are the operating system vendor. I
> don't think the "use the OS library if already present" interpretation
> of the GPL really thought about that case.
I don't think this really plays into this whole thing at all, but my
understanding is that Debian intentionally doesn't use that clause
because it's vague.
Thanks,
Stephen
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