GNU bug report logs - #57306
guix pull to old commit fails due to unsupported manifest format

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#57306: closed (guix pull to old commit fails due to
 unsupported manifest format)
Date: Wed, 31 Aug 2022 11:07:03 +0000

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Your message dated Wed, 31 Aug 2022 13:06:20 +0200
with message-id <87bks0brkj.fsf <at> gnu.org>
and subject line Re: bug#57306: guix pull to old commit fails due to unsupported manifest format
has caused the debbugs.gnu.org bug report #57306,
regarding guix pull to old commit fails due to unsupported manifest format
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Arun Isaac <arunisaac <at> systemreboot.net>
To: bug-guix <at> gnu.org
Subject: guix pull to old commit fails due to unsupported manifest format
Date: Sat, 20 Aug 2022 15:07:31 +0530

When I guix pull to 6f75565b4ec3b8a7247699c327a3b3196c787f76, activate
the profile and run guix describe, it fails with an "unsupported
manifest format" error.

--8<---------------cut here---------------start------------->8---
$ guix pull --commit=6f75565b4ec3b8a7247699c327a3b3196c787f76 -p
/tmp/test
$ source /tmp/test/etc/profile
$ guix describe
guix describe: error: unsupported manifest format
--8<---------------cut here---------------end--------------->8---

This happens because my guix-daemon writes a version 4 manifest and the
guix from commit 6f75565b4ec3b8a7247699c327a3b3196c787f76 only
understands a version 3 manifest.

This may be related to https://issues.guix.gnu.org/56545

[Message part 3 (message/rfc822, inline)]

From: Ludovic Courtès <ludo <at> gnu.org>
To: Arun Isaac <arunisaac <at> systemreboot.net>
Cc: 57306-done <at> debbugs.gnu.org, zimoun <zimon.toutoune <at> gmail.com>
Subject: Re: bug#57306: guix pull to old commit fails due to unsupported
 manifest format
Date: Wed, 31 Aug 2022 13:06:20 +0200

Hi,

Arun Isaac <arunisaac <at> systemreboot.net> skribis:

>> I do not think it is related to guix-daemon and I think it is expected;
>> indeed it could be considered as a bug.  The command-line,
>>
>>     guix pull --commit=xyz -p /tmp/test
>>
>> writes /tmp/test/manifest using the current Guix (say manifest 4) and
>> not using Guix at commit xyz (say manifest 3).  Contrary to “guix
>> time-machine --commit=xyz”.
>
> Ah, that makes sense! Any ideas as to how this issue might be fixed?

I fixed it in 67a6828b2bb821274757f686f7c685b664339a96 using the same
trick as earlier.

Thanks!

Ludo’.

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