Date: Fri, 18 Feb 2022 12:25:33 -0800
From: Andres Freund <andres@anarazel.de>
To: Joe Conway <mail@joeconway.com>
Cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>,
	Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org,
	Andrew Dunstan <andrew@dunslane.net>
Subject: Re: Time to drop plpython2?
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Hi,

On 2022-02-18 14:46:39 -0500, Joe Conway wrote:
> On 2/18/22 14:37, Andres Freund wrote:
> > > That seems to have worked.
> > > 
> > > But the question is, is that the correct/recommended method?
> > 
> > If python3 is in PATH, then you shouldn't need that part.
> 
> Not quite -- python3 is definitely in the PATH:
> 
> 8<-------------------
> $ which python3
> /usr/bin/python3
> 8<-------------------
> 
> And I gather that merely installing python3 RPMs on a RHEL-esque 7.X system
> does not replace the python symlink:
> 
> 8<-------------------
> $ yum whatprovides /usr/bin/python
> 
> python-2.7.5-89.el7.x86_64 : An interpreted, interactive, object-oriented
> programming language
> Repo        : base
> Matched from:
> Filename    : /usr/bin/python
> 
> $ ll /usr/bin/python
> lrwxrwxrwx. 1 root root 7 Mar 13  2021 /usr/bin/python -> python2
> 8<-------------------

Yea, that all looks fine. What's the problem if you don't specify the
PYTHON=python3? We try python3, python in that order by default, so it should
pick up the same python3 you specify explicitly?

Or maybe I'm just misunderstanding what you're asking...

Greetings,

Andres Freund