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From: Andrew Gierth <andrew@tao11.riddles.org.uk>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: Andres Freund <andres@anarazel.de>
Cc: Christoph Berg <myon@debian.org>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.)
Date: Wed, 26 Jun 2019 23:48:16 +0100
Message-ID: <87y31oq9g6.fsf@news-spur.riddles.org.uk> (raw)
In-Reply-To: <17148.1561568815@sss.pgh.pa.us>
References: <24452.1560285699@sss.pgh.pa.us>
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	<CA+TgmoYF00U3Pbkh4mXhXr1NN6pKFM278KmXRS35HDuHgNcMFw@mail.gmail.com>
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	<8736jwsdv2.fsf@news-spur.riddles.org.uk>
	<17148.1561568815@sss.pgh.pa.us>

>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:

 Tom> No zone1970.tab.

zone.tab is an adequate substitute - a fact which I thought was
sufficiently obvious as to not be worth mentioning.

(also see https://reviews.freebsd.org/D20646 )

 Tom> I do not think we can rely on that file being there, since zic
 Tom> itself doesn't install it; it's up to packagers whether or where
 Tom> to install the "*.tab" files.

The proposed rules I suggested do work almost as well if zone[1970].tab
is absent, though obviously that's not the optimal situation. But are
there any systems which lack it? It's next to impossible to implement a
sane "ask the user what timezone to use" procedure without it.

 Tom> In general, the point I'm trying to make is that our policy should
 Tom> be "Ties are broken arbitrarily, and if you don't like the choice
 Tom> that initdb makes, here's how to fix it".

Yes, you've repeated that point at some length, and I am not convinced.
Is anyone else?

-- 
Andrew (irc:RhodiumToad)





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  Cc: andrew@tao11.riddles.org.uk, tgl@sss.pgh.pa.us, thomas.munro@gmail.com, robertmhaas@gmail.com, sfrost@snowman.net, andres@anarazel.de, myon@debian.org, pgsql-hackers@postgresql.org
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