From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#24496: offloading should fall back to local build after n tries
Date: Mon, 26 Sep 2016 18:20:51 +0900
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References: <8760ppr3q3.fsf@we.make.ritual.n0.is>
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To: ng0 <ngillmann@runbox.com>
Cc: 24496@debbugs.gnu.org

Hello!

ng0 <ngillmann@runbox.com> skribis:

> When I forgot that my build machine is offline and I did not pass
> --no-build-hook, the offloading keeps trying forever until I had to
> cancel the build, boot the build-machine and started the build again.
>
> A solution could be a config option or default behavior which after
> failing to offload for n times gives up and uses the local builder.
>
> Is this desired at all? Setups like hydra could get problems, but for
> small setups with the same architecture there could be a solution beyond
> --no-build-hook?

Like you say, on Hydra-style setup this could be a problem: the
front-end machine may have --max-jobs=3D0, meaning that it cannot perform
builds on its own.

So I guess we would need a command-line option to select a different
behavior.  I=E2=80=99m not sure how to do that because =E2=80=98guix offloa=
d=E2=80=99 is
=E2=80=9Chidden=E2=80=9D behind =E2=80=98guix-daemon=E2=80=99, so there=E2=
=80=99s no obvious place for such an
option.

In the meantime, you could also hack up your machines.scm: it would
return a list where unreachable machines have been filtered out.

Ludo=E2=80=99.