IOhannes can chime in too but I believe Pd has used Tcl 8.5+ for a very long time on Linux. This was before macOS since the system used to come with 8.4 while Linux had already moved on.

On Oct 19, 2023, at 2:33 PM, pd-list-request@lists.iem.at wrote:

Message: 2
Date: Thu, 19 Oct 2023 13:33:08 +0100
From: Pierre Alexandre Tremblay <tremblap@gmail.com>
Cc: Pd-List <pd-list@lists.iem.at>
Subject: Re: [PD] Quick dev question r.e. underlying tcl version
Message-ID: <C16C20E7-5D88-43E0-A079-BD366342CEA6@gmail.com>
Content-Type: text/plain; charset="utf-8"

Ok thanks. Then I presume that for Linux it is a salad of versions then - I?ll put a test and see what happens

Thanks!

--------
Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com