From: Simon Tournier <zimon.toutoune@gmail.com>
To: Blake Shaw <blake@reproduciblemedia.com>
Cc: 64472@debbugs.gnu.org
Subject: bug#64472: guix pull --roll-back breaks guix
Date: Fri, 24 Nov 2023 11:17:32 +0100 [thread overview]
Message-ID: <8734wve9qb.fsf@gmail.com> (raw)
In-Reply-To: <c3d9e1e9-0865-4547-a648-a7aefd5c4042@reproduciblemedia.com> (Blake Shaw's message of "Wed, 05 Jul 2023 17:21:23 +0700")
Hi,
Indeed, the issue can be annoying.
--8<---------------cut here---------------start------------->8---
$ guix gc ---delete-generations=0d
$ guix pull --roll-back
fetching path `/gnu/store/…-module-import-compiled'...
Downloading https://ci.guix.gnu.org/nar/lzip/…-module-import-compiled...
module-import-compiled 107KiB 1.4MiB/s 00:00 ▕██████████████████▏ 100.0%
fetching path `/gnu/store/…-libffi-3.4.4'...
Downloading https://ci.guix.gnu.org/nar/lzip/…-libffi-3.4.4...
libffi-3.4.4 56KiB 6.3MiB/s 00:00 ▕██████████████████▏ 100.0%
fetching path `/gnu/store/…-libgc-8.2.2'...
Downloading https://ci.guix.gnu.org/nar/zstd/…-libgc-8.2.2...
libgc-8.2.2 228KiB 2.3MiB/s 00:00 ▕██████████████████▏ 100.0%
fetching path `/gnu/store/…-libunistring-1.0'...
Downloading https://ci.guix.gnu.org/nar/zstd/…-libunistring-1.0...
libunistring-1.0 661KiB 2.7MiB/s 00:00 ▕██████████████████▏ 100.0%
fetching path `/gnu/store/…-pkg-config-0.29.2'...
Downloading https://ci.guix.gnu.org/nar/zstd/…-pkg-config-0.29.2...
pkg-config-0.29.2 209KiB 2.3MiB/s 00:00 ▕██████████████████▏ 100.0%
fetching path `/gnu/store/…-guile-3.0.9'...
Downloading https://ci.guix.gnu.org/nar/zstd/…-guile-3.0.9...
guile-3.0.9 8.1MiB 1.6MiB/s 00:05 ▕██████████████████▏ 100.0%
building path(s) `/gnu/store/zm6cs3grf3l78mz1swakvfddn6k66l7m-profile'
switched from generation 29 to 0
--8<---------------cut here---------------end--------------->8---
Aside the unexpected downloads, now Guix have disappeared…
$ hash guix
$ type -P guix
/home/simon/.config/guix/profiles/emacs/emacs/bin/guix
At best it finds nothing. Or worse, it could find an unexpected one
installed in one of my profiles – here from the package ’guix’. And it
hides the error “No such file or directory”; for instance, it outputs:
$ guix describe
Generation 8 Oct 25 2023 14:23:41 (current)
guix 4dfdd82
repository URL: https://git.savannah.gnu.org/git/guix.git
branch: master
commit: 4dfdd822102690b5687acf28365ab707b68d9476
And I do not know where that comes from. Another story.
Well, the current profiles reads,
--8<---------------cut here---------------start------------->8---
$ ls -1 /var/guix/profiles/per-user/simon/ | grep current
current-guix
current-guix-0-link
current-guix-29-link
--8<---------------cut here---------------end--------------->8---
And that profile numbered 0 newly created is empty:
--8<---------------cut here---------------start------------->8---
$ tree /var/guix/profiles/per-user/simon/current-guix-0-link
/var/guix/profiles/per-user/simon/current-guix-0-link
├── etc
│ └── profile
└── manifest
2 directories, 2 files
--8<---------------cut here---------------end--------------->8---
On Wed, 05 Jul 2023 at 17:21, Blake Shaw <blake@reproduciblemedia.com> wrote:
> But like, should this happen? Should we ever be rolling back to an
> empty "0" generation that doesn't even contain guix, and thus creates
> a pickle for those who don't have prior knowledge of how to get out of
> it? Should we limit gc --delete-generations to always keep a previous
> generation at hand, perhaps unless forced by some other flag, so that
> [in particular, new] users don't break their systems in the middle of
> the day and then have something to solve that encumbers their plans &
> work?
IMHO, it is an bug with “guix pull --roll-back”. When the current
generation is the older one, then it should not be possible to
roll-back; or roll-back should do nothing in this corner case.
It should not be possible to create an empty profile numbered 0.
Cheers,
simon
prev parent reply other threads:[~2023-11-25 11:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-05 10:21 bug#64472: guix pull --roll-back breaks guix Blake Shaw via Bug reports for GNU Guix
2023-11-24 10:17 ` Simon Tournier [this message]
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