Hi, On Sat, 25 May 2024 at 11:31, Ludovic Courtès wrote: >> But, I do have the given key in my '/etc/guix/acl', and this works: > > Are /etc/guix/acl and /etc/guix world-readable? I had been bitten by this recently. And I have not found any mention about that in the manual. Maybe it could helpful to add: