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From: Tom Lane <[email protected]>
To: Thomas Munro <[email protected]>
Cc: Justin Pryzby <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: [email protected]
Cc: Noah Misch <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Anastasia Lubennikova <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Melanie Plageman <[email protected]>
Cc: Peter Eisentraut <[email protected]>
Cc: Daniel Gustafsson <[email protected]>
Cc: samay sharma <[email protected]>
Subject: Re: CI and test improvements
Date: Wed, 01 Feb 2023 20:12:12 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <CA+hUKG+kFpXfCsJQPJApkk7WrBFYYSao0V8q+cj88KQBV8XYRQ@mail.gmail.com>
References: <[email protected]>
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Thomas Munro <[email protected]> writes:
> Some observations:

> * macOS has a new release every year in June[1]
> * updates cease after three years[1]
> * thus three releases are in support (by that definition) at a time
> * we need an image on Cirrus; 13 appeared ~1 month later[2]
> * we need Homebrew support; 13 appeared ~3 months later[3]
> * we have 13 and 12 in the buildfarm, but no 11
> * it's common for developers but uncommon for servers/deployment

> So what should our policy be on when to roll the CI image forward?  I
> guess around New Year/now (~6 months after release) is a good time and
> we should just do it.  Anyone got a reason why we should wait?  Our
> other CI OSes have slower major version release cycles and longer
> lives, so it's not quite the same hamster wheel of upgrades.

I'd argue that developers are probably the kind of people who update
their OS sooner rather than later --- I've usually updated my laptop
and at least one BF animal to $latest macOS within a month or so of
the dot-zero release.  So waiting 6 months seems to me like CI will be
behind the users, which will be unhelpful.  I'd rather drop the oldest
release sooner, if we need to hold down the number of macOS revisions
under test.

			regards, tom lane

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