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From: "Ludovic Courtès" <ludo@gnu.org>
To: zimoun <zimon.toutoune@gmail.com>
Cc: Guix Devel <guix-devel@gnu.org>
Subject: Re: wishlist: “repack” generations history of profile
Date: Mon, 30 May 2022 17:40:53 +0200	[thread overview]
Message-ID: <875yln2flm.fsf@gnu.org> (raw)
In-Reply-To: <86r14kdw4m.fsf@gmail.com> (zimoun's message of "Mon, 23 May 2022 18:58:01 +0200")

Hi,

zimoun <zimon.toutoune@gmail.com> skribis:

> On Mon, 23 May 2022 at 17:42, Ludovic Courtès <ludo@gnu.org> wrote:
>
>> Exactly!  ‘guix pull’ profiles are entirely reproducible: we can rebuild
>> them from the output of ‘guix describe’.
>>
>> So ‘guix gc’ (or something) could automatically remove old generation
>> symlinks and instead store the output of ‘guix describe’.  That way,
>> ‘--list-generations’ or ‘--switch-generations’ could transparently
>> display the info or rebuild the generation.
>
> I have in mind to remove all except the manifest file.

[...]

> Or maybe, it is easier to remove as today but save the relevant
> information elsewhere.  WDYT?

Yes, that ‘manifest’ file would have copied elsewhere (we can’t just
remove part of what’s in a /gnu/store directory).

> Today, I manually store the output of “guix describe” before I
> manipulate a profile.  This channels.scm output is tracked by Git as
> part of my project.  Then I run “git log” to find the previous state of
> interest and go back using,
>
>     guix time-machine -C channels.scm -- shell -m manifest.scm
>
> which is fine and works well.  Probably the good practise. :-)
>
> Instead of this external tracking, I would like to allow this workflow:
>
>     guix package -p project --list-generations
>     guix package -p project --switch-generation=12
>
> whatever the sysadmin collect about the old generations.

Do you expect ‘--list-generations’ to look at older revisions of your
version-controlled ‘manifest.scm’?

Ludo’.


  reply	other threads:[~2022-05-30 15:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-20 13:47 wishlist: “repack” generations history of profile zimoun
2022-05-21 11:30 ` Liliana Marie Prikler
2022-05-23 16:20   ` zimoun
2022-05-23 15:42 ` Ludovic Courtès
2022-05-23 16:58   ` zimoun
2022-05-30 15:40     ` Ludovic Courtès [this message]
2022-05-30 17:18       ` zimoun
2022-06-04  7:39         ` Giovanni Biscuolo
2022-06-05  9:45           ` zimoun
2022-06-05 11:16             ` Giovanni Biscuolo

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