MIME-Version: 1.0
References: 
 <CAN55FZ3VOUSO2ZmBUE9wRNnL9fUQfGv5qWefk_1pWYqgJ1bRSQ@mail.gmail.com>
 <x5exjaepg73inqwj2dlaicle2pki2pjkpzwa2rksyvrkl7nhzq@rnsgrxmenl3i>
In-Reply-To: <x5exjaepg73inqwj2dlaicle2pki2pjkpzwa2rksyvrkl7nhzq@rnsgrxmenl3i>
From: Jacob Champion <jacob.champion@enterprisedb.com>
Date: Wed, 1 Apr 2026 08:36:14 -0700
Message-ID: 
 <CAOYmi+kuxWPBte3R3azvXg8K-tvEX1WNoYHt1+R9N8GWTAGkkA@mail.gmail.com>
Subject: Re: 'Bad file descriptor: dup2( 1, 2 )' error on MacOS CI tasks
To: Andres Freund <andres@anarazel.de>
Cc: Nazir Bilal Yavuz <byavuz81@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 Tom Lane <tgl@sss.pgh.pa.us>,
	Noah Misch <noah@leadboat.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Archived-At: 
 <https://www.postgresql.org/message-id/CAOYmi%2BkuxWPBte3R3azvXg8K-tvEX1WNoYHt1%2BR9N8GWTAGkkA%40mail.gmail.com>
Precedence: bulk

On Wed, Apr 1, 2026 at 6:58=E2=80=AFAM Andres Freund <andres@anarazel.de> w=
rote:
> I'm afraid the guy maintaining both IPC::Run [1] and IO::Tty has gone all=
 in on AI
> authored code.  Both IPC::Run and IO::Tty have seen more merges in the la=
st
> week than in the 5 years before. Stuff getting merged left and right, wit=
h
> failing tests to boot.
>
> If I wanted to do a supply chain attack on postgres, this would be the
> way. Hijack IPC::Run, edit the commits locally on a committers machine be=
fore
> push, to add a backdoor, celebrate.

I did consider locking the exact version of IPC::Run during the NetBSD
flake debacle [1], but abandoned it after the cross-platform pain... I
believed signature verification was "good enough" at the time. Should
we reconsider?

--Jacob

[1] https://github.com/anarazel/pg-vm-images/pull/125