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Re: libpq API incompatibility between 7.4 and 8.0

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Martin Pitt <mpitt(at)debian(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: libpq API incompatibility between 7.4 and 8.0
Date: 2005-02-02 17:52:03
Message-ID: 200502021852.04081.peter_e@gmx.net (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
Tom Lane wrote:
> Martin Pitt <mpitt(at)debian(dot)org> writes:
> > What would you propose as a solution?
>
> Do nothing.  The problem you are raising isn't very serious since
> RPM-style installations don't support concurrent installation of
> multiple PG versions anyway.  That being the case, it doesn't really
> matter whether 8.0 psql can use a 7.4 library or vice versa.

Partial upgrades is the key word.

> To do otherwise would essentially amount to deciding that
> get_progname is part of the exported API of libpq forevermore. 
> That's not something I'm willing to buy into.  It was a mistake that
> it was done that way in 7.4, and I want to rectify that mistake
> before it gets any more entrenched.

We can rectify the mistake, but then we need to change the SONAME.  
That's what it's for.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/

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