Re: libpq API incompatibility between 7.4 and 8.0

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/