From: Tom Lane <tgl@sss.pgh.pa.us>
To: Noah Misch <noah@leadboat.com>
cc: Aleksander Alekseev <aleksander@timescale.com>,
        pgsql-hackers <pgsql-hackers@postgresql.org>,
        Marco Slot <marco.slot@gmail.com>,
        Alvaro Herrera <alvherre@alvh.no-ip.org>,
        Christoph Berg <myon@debian.org>,
        Pavan Deolasee <pavan.deolasee@gmail.com>
Subject: Re: Potential ABI breakage in upcoming minor releases
In-reply-to: <20241115222749.2b.nmisch@google.com>
References: <1976928.1731614974@sss.pgh.pa.us> <202411142033.u6za5a6ylj2k@alvherre.pgsql> <20241114224108.d0.nmisch@google.com> <CAJ7c6TPcUJq_Bwo69f6ysRA1UbmSh_hOOEzJ2EvM0cW=3VEh5w@mail.gmail.com> <CAFMSG9Hy-2-8tfmmKy7noCbA3Yn1UY2SFUwYj7wHODTO8gDm8w@mail.gmail.com> <CAJ7c6TMCc85YoiSKex5Sztz6bEmV-0YqL7FY=_MxxcyoMGTDfQ@mail.gmail.com> <2443809.1731683394@sss.pgh.pa.us> <20241115175223.68.nmisch@google.com> <2483970.1731702561@sss.pgh.pa.us> <20241115222749.2b.nmisch@google.com>
Comments: In-reply-to Noah Misch <noah@leadboat.com>
	message dated "Fri, 15 Nov 2024 14:27:49 -0800"
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Date: Fri, 15 Nov 2024 17:37:01 -0500
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Noah Misch <noah@leadboat.com> writes:
> Currently, we have Christoph Berg writing "I'd say the ship has sailed, =
a new
> release would now break things the other way round." and you writing in =
favor
> of undoing.  It think it boils down to whether you want N people to reco=
mpile
> twice or M>N people to recompile once, where we don't know N or M except=
 that
> M > N.  Fortunately, the N are probably fairly well represented in this
> thread.  So to all: please speak up by 2024-11-16T17:00+0000 if you thin=
k it's
> the wrong choice to bring back the v16.4 ABI and tell people to rebuild
> extensions built against v16.5 (likewise for corresponding versions of
> v14-v17).  Currently, the plan of record is to do that.

Well, no, what I propose is for some number of people to not recompile
extensions at all.  Only the sort of early adopters who install a new
PG release on day one will have run into this, so I anticipate that
that number will be much larger than the number who have already done
a rebuild.

			regards, tom lane