bug#46737: Services breakage from the PostgreSQL socket-directory configuration change

[Leo Famulari <leo@famulari.name>]

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On Mon, Apr 12, 2021 at 09:47:45PM +0100, Christopher Baines wrote:
> 
> Christopher Baines <mail@cbaines.net> writes:
> 
> > Mathieu Othacehe <othacehe@gnu.org> writes:
> >
> >>> One workaround, the one employed in the tests is to revert to the old
> >>> behaviour for the PostgreSQL service by setting socket-directory to #f.
> >>
> >> You're right, sorry about the breakage. As you noticed we are in an
> >> in-between situation where the patch updating Postgresql package to use
> >> "/var/run/postgresql" by default is only on core-updates, but the
> >> service is already using it as a default on master.
> >>
> >> This means that "createdb", "dropdb" and other Postgresql user tools
> >> need to have an explicit "-h /var/run/postgresql" argument for now.
> >>
> >> Until the package patch gets merged in the master branch, we could set
> >> the "socket-directory" field of <postgresql-config-file> record to #f to
> >> restore an acceptable default behaviour.
> >>
> >> WDYT?
> >
> > I think that would be good. It's unfortunate that the package change is
> > stuck on core-updates for now, but configuring the service on master to
> > keep the old behaviour until core-updates is merged sounds sensible.
> 
> I don't know if the expectation was that I was going to fix this, but
> since it seems there's a release coming up, I went ahead and prepared a
> patch [1].
> 
> 1: https://issues.guix.gnu.org/47736

I pushed your patch as c311147bd16aa0e5746d9cbf31502f5fd61e470c

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