Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, Christoph Berg <myon(at)debian(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.)
Date: 2019-06-19 23:30:44
Message-ID: 29832.1560987044@sss.pgh.pa.us
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I wrote:
> So I'm toying with the idea of extending Andrew's patch to put a negative
> preference on "localtime", ensuring we'll use some other name for the zone
> if one is available.

Oh ... after further review it seems like "posixrules" should be
de-preferred on the same basis: it's uninformative and unportable,
and it's short enough to have a good chance of capturing initdb's
attention. I recall having seen at least one machine picking it
recently.

Moreover, while I think most tzdb installations have that file (ours
certainly do), the handwriting is on the wall for it to go away,
leaving only postmaster startup failures behind:

http://mm.icann.org/pipermail/tz/2019-June/028172.html

regards, tom lane

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