Ludovic Courtès <ludo@gnu.org> skribis:

> If you do, as a regular user:
>
>   guix pull
>   sudo guix system reconfigure …
>
> the ‘guix system reconfigure’, as part of the downgrade-detection
> machinery, triggers an update of the channel checkout(s) in
> ~root/.cache, even though ~USER/.cache is already up-to-date.
>
> One way to avoid it might be to special-case the checkout cache
> directory for when ‘SUDO_USER’ is set.

Attached is a prototype that first clones/fetches from ~USER/.cache into
~root/.cache, in the hope that this avoids the need to access the
upstream repo.  (It requires ‘set-remote-url!’, which is only in
Guile-Git ‘master’.)

It’s a bit hacky but I can’t think of a better way to address this
issue.  In particular, having root use ~USER/.cache directly is not an
option: it could end up creating root-owned files there.

Thoughts?

Ludo’.