undoing a --roll-back

undoing a --roll-back

[Yagnesh Raghava Yakkala]

Hello all,

I am trying to understand rollback feature. I have five generations in the
package history. As I operated roll-back command, my "current" generation sets
to 3 from 4 (shell log pasted below). Now how can I return to 4. More general, can I
go to a desired generation by giving number?  say "guix package --goto-generation #"

Thanks.

╭─────
│sealion:~
│$ guix package --roll-back
│switching from generation 4 to 3
│nothing to be done
│✗ sealion:~
│$ guix package --fallback
│nothing to be done
│sealion:~
│$ guix package --list-generations
│Generation 1	Apr 06 2014 20:43:55
│  autoconf	2.69	out	/gnu/store/j1jlnidgsl91vka52faxd8gg7785ps2h-autoconf-2.69
│
│Generation 2	Apr 06 2014 21:12:09
│  autoconf	2.69	out	/gnu/store/j1jlnidgsl91vka52faxd8gg7785ps2h-autoconf-2.69
│  hello	2.9	out	/gnu/store/5k0dr40p8404sgjx9w7vbb9vdcp6kzsl-hello-2.9
│
│Generation 3	Apr 06 2014 21:13:38	(current)
│  autoconf	2.69	out	/gnu/store/j1jlnidgsl91vka52faxd8gg7785ps2h-autoconf-2.69
│  hello	2.9	out	/gnu/store/5k0dr40p8404sgjx9w7vbb9vdcp6kzsl-hello-2.9
│  automake	1.14.1	out	/gnu/store/nnljzxzsjf5wrr28j2zy3k6y71a8y28p-automake-1.14.1
│
│Generation 4	Apr 06 2014 22:26:05
│  autoconf	2.69	out	/gnu/store/j1jlnidgsl91vka52faxd8gg7785ps2h-autoconf-2.69
│  hello	2.9	out	/gnu/store/5k0dr40p8404sgjx9w7vbb9vdcp6kzsl-hello-2.9
│  automake	1.14.1	out	/gnu/store/nnljzxzsjf5wrr28j2zy3k6y71a8y28p-automake-1.14.1
│  emacs	24.3	out	/gnu/store/5aqsf21m86qf03jj8rc6bvq9v0xnlws5-emacs-24.3
│
│Generation 5	Apr 07 2014 02:26:17
│  autoconf	2.69	out	/gnu/store/j1jlnidgsl91vka52faxd8gg7785ps2h-autoconf-2.69
│  hello	2.9	out	/gnu/store/5k0dr40p8404sgjx9w7vbb9vdcp6kzsl-hello-2.9
│  automake	1.14.1	out	/gnu/store/nnljzxzsjf5wrr28j2zy3k6y71a8y28p-automake-1.14.1
╰─────

-- 
ఎందరో మహానుభావులు అందరికి వందనములు.
YYR

Re: undoing a --roll-back

[Ludovic Courtès]

(Adding bug-guix so we keep track of it.)

Yagnesh Raghava Yakkala <hi@yagnesh.org> skribis:

> I am trying to understand rollback feature. I have five generations in the
> package history. As I operated roll-back command, my "current" generation sets
> to 3 from 4 (shell log pasted below). Now how can I return to 4. More general, can I
> go to a desired generation by giving number?  say "guix package --goto-generation #"

Good question.  We can’t do that at the moment, but it would be simple
to add.

In the meantime you can do it by hand by changing the target of the
/var/guix/profiles/per-user/$USER/guix-profile symlink (or similar.)

Thanks,
Ludo’.

Re: undoing a --roll-back

[Yagnesh Raghava Yakkala]

Hello Ludovic,

On Apr 07 2014, ludo@gnu.org (Ludovic Courtès) wrote:

> (Adding bug-guix so we keep track of it.)

Thanks 

> In the meantime you can do it by hand by changing the target of the
> /var/guix/profiles/per-user/$USER/guix-profile symlink (or similar.)

Thanks, that was easy.

-- 
ఎందరో మహానుభావులు అందరికి వందనములు.
YYR

bug#17208: undoing a --roll-back

[Eric Bavier]

Note that commit b3bb82f1 adds the '--switch-generation' option to
'guix package'.

-- 
Eric Bavier

bug#17208: undoing a --roll-back

[Ludovic Courtès]

Eric Bavier <ericbavier@gmail.com> skribis:

> Note that commit b3bb82f1 adds the '--switch-generation' option to
> 'guix package'.

Indeed, I think it answers the original request.
So I’m happily closing the bug.  :-)

Ludo’.