Excellent - thanks for letting us know Ludo', this is really useful.

________________________________
From: Ludovic Courtès <ludo@gnu.org>
Sent: Saturday, 1 October 2022, 18:55
To: Philip Beadling <phil@beadling.co.uk>
Cc: Jacob Hrbek <kreyren@rixotstudio.cz>; guix-devel@gnu.org <guix-devel@gnu.org>
Subject: Re: Make guix use alternative substitute if one is down

Hi,

Philip Beadling <phil@beadling.co.uk> skribis:

> substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%guix substitute: warning: ci.guix.gnu.org<http://ci.guix.gnu.org>: connection failed: No route to host
> substitute:
> 20,6 MB will be downloaded
> substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
> substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
> guix substitute: error: connect*: No route to host
> substitution of /gnu/store/c0wd1i6yknmiyp89626mfr9db74dayry-libmng-2.0.3

The good news is that the ci.guix.gnu.org outage gave an incentive to
finally fix this bug:

  https://issues.guix.gnu.org/58017

Ludo’.