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Re: error: %guix-register-program: unbound variable on guix time-machine

From: Maxim Cournoyer
Subject: Re: error: %guix-register-program: unbound variable on guix time-machine
Date: Wed, 19 Jul 2023 23:39:17 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux)

Hi Simon,

Simon Tournier <> writes:

> Hi Maxim,
> On Wed, 31 May 2023 at 21:15, Maxim Cournoyer <> 
> wrote:
>> Hello,
>> Attempting to navigate to a relatively distant past (Wed Jan 25 23:42:11
>> 2017 -0500) with commit 9b9e147117e6009451d7acc1f8f156e041263e32, I hit:
> [...]
>> Is this expected?  info '(guix) Invoking guix time-machine' does not
>> mention of any point "too far" in the past to travel to.
> It’s expected.  It’s not possible to travel so far back.  The zero for
> time-traveling is the introduction of “inferiors” mechanism around 2019.
> Well, since the question is recurrent, I agree that:
>  1. the manual needs to be improved;
>  2. the command “guix time-machine” should raise a gentle error when the
>     specification is unreachable.

I've sent a patch doing both 1 and 2 above to guix-patches; you were
CC'd on it.  Let me know what you think!


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