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From: Rich <rich@example.invalid>
Newsgroups: comp.lang.tcl
Subject: Re: Tcl: Shared directory for .tm modules across 8.6 and 9.0?
Date: Mon, 5 May 2025 22:45:24 -0000 (UTC)
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greg <gregor.ebbing@gmx.de> wrote:
> Hello,
> I'm using .tm modules  on Linux (Debian) and currently have the 
> following environment variables set (.profile, .bashrc, .xsessionrc ):
> 
> 
> export TCL8_6_TM_PATH="$HOME/lib/tcl8.6/site-tcl"
> export TCL9_0_TM_PATH="$HOME/lib/tcl9.0/site-tcl"
> 
> 
> This works fine. However:
> is there a way to define a shared directory for .tm modules that can be 
> used by multiple Tcl versions, such as both 8.6 and 9.0?

From the 'tm' man page 
(https://www.tcl-lang.org/man/tcl8.6.11/TclCmd/tm.html):

$::env(TCLX_y_TM_PATH)
    A list of paths, separated by either : (Unix) or ; (Windows).  This 
    is user and site specific as this environment variable can be set 
    not only by the user's profile, but by system configuration scripts 
    as well.

Note the "a list" and "separated by either : or ;" parts of the 
documentation.

Just create a shared dir, and add the shared dir to both variables, 
i.e. (assuming Unix 
below):

export TCL8_6_TM_PATH="$HOME/lib/tcl8.6/site-tcl:$HOME/lib/tcl-shared/stuff"