Re: Exposing an installation's default value of unix_socket_directory

Added to TODO:
Allow simpler reporting of the unix domain socket directory and alloweasier configuration of its default location 
* http://archives.postgresql.org/pgsql-hackers/2010-10/msg01555.php 

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Tom Lane wrote:
> Peter Eisentraut <peter_e@gmx.net> writes:
> > On tor, 2010-10-21 at 16:59 -0400, Tom Lane wrote:
> >> Actually, the only reason this is even up for discussion is that
> >> there's
> >> no configure option to set DEFAULT_PGSOCKET_DIR.  If there were, and
> >> debian were using it, then pg_config --configure would tell what I
> >> wish
> >> to know.  I thought for a bit about proposing we add such an option,
> >> but given the current state of play it might be more misleading than
> >> helpful: as long as distros are accustomed to changing this setting
> >> via
> >> a patch, you couldn't trust pg_config --configure to tell you what a
> >> given installation actually has compiled into it.
> 
> > Presumably, if a configure option were added, they couldn't change it
> > via patch anymore.
> 
> Hm, you're right: we'd remove the pg_config_manual.h entry, so the
> existing patches would stop working, and presumably maintainers would
> figure out that they ought to use the configure switch instead.  So
> that argument holds little water.
> 
> > Btw., a configure option for this was rejected years ago to discourage
> > people from actually changing the default.
> 
> Yeah, I remember that discussion now that you mention it.  It still
> seems like a good policy ... but given that some popular packages are
> changing the default whether we think it's a good idea or not, maybe
> it's better to acknowledge that reality.  We could still have some
> text in the manual pointing out the compatibility hazards of using
> the switch, I guess.
> 
>             regards, tom lane
> 
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--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +