--- Begin Message ---
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Subject: |
guix time-machine/shell throws "unsupported manifest format" error |
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Date: |
Wed, 13 Jul 2022 20:53:54 -0400 |
Hi Guix,
I recently tried re-entering an older environment via:
$ guix describe
Generation 128 Jul 06 2022 14:50:39 (current)
guix 17892c5
repository URL: https://git.savannah.gnu.org/git/guix.git
branch: master
commit: 17892c5f9c5c5c93325884834a58cc2a4fafa51f
sfl-packages 6385881
repository URL: https://gitlab.com/Apteryks/sfl-guix-channel
branch: master
commit: 6385881124429016f750b0f562b70e07f592275e
$ guix time-machine -C channels.scm -- shell
with in the current directory the project manifest file:
--8<---------------cut here---------------start------------->8---
(packages->manifest
(map specification->package
(list
;; General utilities.
"bash"
"coreutils"
"cpio"
"cqfd"
"findutils"
"gawk"
"git"
"grep"
"gzip"
"info-reader" ;to generate the info dir entry
"less" ;for a better git experience
"make"
"man-db" ;to generate the manpages database
"pandoc"
"pict"
"sed"
"openssh" ;for the SSH client used by git
"tar"
"tree"
"wget"
;; Python and libraries.
"python-matplotlib"
"python-paramiko"
"python-robotframework"
"python-robotframework-datadriver"
"python-robotframework-sshlibrary"
"python-robotframework-stacktrace"
"python-scp"
"python-selenium"
"python-tenacity"
"python-wrapper"
;; Drivers
"python-labjack"
;; Development tools.
"python-flake8"
"python-flake8-isort"
"python-ipython"
"python-ipython-documentation"
;; To use ipdb with Python's breakpoint():
;; 'export PYTHONBREAKPOINT=ipdb.sset_trace'
;; then set 'breakpoint()' in Python sources or
;; 'Evaluate breakpoint()' in RobotFramework sources.
"python-ipdb"
"python-isort"
"python-pdbpp" ;for the 'sticky' mode
"python-pylint"
"python-robotframework-lint"
;; Browsers.
"icecat"
"ungoogled-chromium")))
--8<---------------cut here---------------end--------------->8---
and the channels.scm file:
--8<---------------cut here---------------start------------->8---
(list (channel
(inherit %default-guix-channel)
(commit
"ceeb2bfcaeb4380e01d26c8425e28b94ac13558a"))) ;2022-06-07
--8<---------------cut here---------------end--------------->8---
and was surprised to be greeted with the following error:
--8<---------------cut here---------------start------------->8---
(repl-version 0 1 1)
(exception %exception (non-self-quoting 140737300283024 "#<&message message:
\"unsupported manifest format\">"))
/var/log/guix/drvs/j8/0wjfx7s7nxhcn0wjxfysnnv2knx0c1-guix-package-cache.drv
(END)
--8<---------------cut here---------------end--------------->8---
What does it mean? Which manifest is it referring to?
Thanks,
Maxim
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#56545: guix time-machine/shell throws "unsupported manifest format" error |
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Date: |
Mon, 18 Jul 2022 07:04:25 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) |
Hi Ludovic,
Ludovic Courtès <ludo@gnu.org> writes:
> Hi!
>
> Maxim Cournoyer <maxim.cournoyer@gmail.com> scribes:
>
>> and the channels.scm file:
>>
>> (list (channel
>> (inherit %default-guix-channel)
>> (commit
>> "ceeb2bfcaeb4380e01d26c8425e28b94ac13558a"))) ;2022-06-07
>>
>>
>> and was surprised to be greeted with the following error:
>>
>> (repl-version 0 1 1)
>> (exception %exception (non-self-quoting 140737300283024 "#<&message message:
>> \"unsupported manifest format\">"))
>> /var/log/guix/drvs/j8/0wjfx7s7nxhcn0wjxfysnnv2knx0c1-guix-package-cache.drv
>> (END)
>>
>> What does it mean? Which manifest is it referring to?
>
> Commit 4ff12d1de7cd617b791996ee7ca1240660b4c20e introduced that bug,
> which was fixed in c9fbd40785a99e13a59d8e530830ce85220a9871:
>
> https://issues.guix.gnu.org/56441
>
> ‘guix describe’ should show that you’re using a commit in that range.
>
> The solution is to run ‘time-machine’ from a commit outside that range,
> for instance with:
>
> guix time-machine -- time-machine -C channels.scm -- whatever
>
> :-)
That's a happy resolution. Thank you!
Maxim
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