From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#33124: Cuirass: register GC roots for evaluations under
	/var/guix/gcroots
Date: Wed, 07 Nov 2018 15:29:38 +0100
Message-ID: <87o9b1ufjh.fsf@gnu.org>
References: <877ei9ypvh.fsf@lassieur.org>
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	Lassieur"'s message of "Tue, 23 Oct 2018 11:27:30 +0200")
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To: =?UTF-8?Q?Cl=C3=A9ment?= Lassieur <clement@lassieur.org>
Cc: 33124-done@debbugs.gnu.org

Hi Cl=C3=A9ment,

Cl=C3=A9ment Lassieur <clement@lassieur.org> skribis:

> I think the goal here is to make sure that the builds that resulted from
> of 1) important evaluations (releases) and 2) recent evaluations aren't
> garbage collected.
>
> <sneek> snape, civodul says: i think Cuirass should register GC roots for=
 its
> 	evaluations under /var/guix/gcroots
> <snape> [...] How many such evaluations should be registered?  If all
> 	are registered, we'll run out of space won't we?  So would it be
> 	like the last 15 or something?
> <civodul> snape: i think we'd register all of them and use (guix cache) to
> 	  automatically wipe old ones periodically  [09:53]
> <civodul> snape: when there's a release we could manually stash important
> 	  evaluations away so they won't be deleted
> <civodul> so i'd just create one subdir for each eval say in
> 	  /var/guix/profiles/USER/cuirass/evaluations  [09:54]
> <civodul> and that'd contain a bunch of symlinks to both the .drv and the
> 	  outputs

I went ahead and implemented a simple version of this in commit
d4623d50edac4a6e81f5986a91c2818f5fc4965d.

Let me know what you think!

Ludo=E2=80=99.