Hello,

For myself, I use the following option:

  --substitute-urls='https://berlin.guixsd.org https://mirror.guixsd.org https://mirror.hydra.gnu.org https://hydra.gnu.org'

I choose 'berlin.guixsd.org' to be the default because it seems to build
substitutes faster than 'hydra.gnu.org'.

Cheers,
Alex

Clément Lassieur <clement@lassieur.org> writes:

> Hi,
>
> Thomas Danckaert <post@thomasdanckaert.be> writes:
>
>> Also, you may want to add this setting globally and permanently, so you don't
>> have to specify it every time you run guix.  You can do this by passing the
>> option to the guix daemon
>>
>>  - when using guix on another distribution with systemd, you can modify the
>> the ExecStart line in /etc/systemd/system/guix-daemon.service as follows:
>>
>> ExecStart=/var/guix/profiles/per-user/root/guix-profile/bin/guix-daemon
>> --build-users-group=guixbuild "--substitute-urls=https://mirror.hydra.gnu.org
>> https://berlin.guixsd.org"
>
> Note that https://mirror.hydra.gnu.org doesn't work well either[1].  You
> might be better off with just https://berlin.guixsd.org.
>
> But I noticed today that https://berlin.guixsd.org doesn't evaluate
> anything anymore[2], so you will only get old evaluations from it.
>
> At the moment I can't find any working solution.
>
> [1]: https://bugs.gnu.org/33151
> [2]: https://berlin.guixsd.org/jobset/guix-master
>
> Cheers,
> Clément