Pjotr Prins <pjotr.public12@thebird.nl> skribis:

> On Mon, Apr 04, 2016 at 11:04:12PM +0200, Ludovic Courtès wrote:
>> Did you authorize the singing key of that server?
>
> That fixed it. I had switched clients forgetting about this one. Would
> it be possible to generate a warning for using a (1) URL where guix
> publish server is not reached and (2) where the client is not
> authorized? Silent failure just has the user guessing.

My initial thoughts was that this is not a failure, so not something to
warn about.  Indeed, at any time the admin can change the ACL, which in
turn makes substitutes available or not.

Besides, signatures are per substitute, so a warning would have to be
generated for each substitute that is signed by an unauthorized
signature, I think.  Like this: