bug#31825: guix offload fails with guix-authenticate error

[ludo@gnu.org (Ludovic Courtès)]

Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:

> Attached is the log for the offloading machine.
>
> From what I can see, the guix-daemon is trying to find the authorized
> key in /etc/guix/acl, but the key is added by Guix to
> /usr/local/etc/guix/acl...

Hmm you may be using two different ‘guix’ commands no?

> 2. The error message should capture the complete error output to ease
> debugging: we can see the useful message "25056 write(2, "guix
> authenticate: error: error: unauthorized public key: (public-key \n (ecc
> \n  (curve Ed25519)\n  (q
> #EEA139318243D36EB4C728DB96856AB15C47AB64C765FA134CCFB12444B82A7C#)\n
> )\n )\n", 176) = 176" in strace. Had I seen this from the start, we
> would have saved some debugging time :).

I agree.

> I could work around the issue by copying manually the authorized key
> sexp to /etc/guix/acl; I now see:
>
> guix offload: testing 1 build machines defined in '/etc/guix/machines.scm'...
> guix offload: '192.168.1.105' is running guile (GNU Guile) 2.2.3
> guix offload: Guix is usable on '192.168.1.105' (test returned "/gnu/store/883yjkl46dxw9mzykykmbs0yzwyxm17z-test")
> sending 1 store item to '192.168.1.105'...
> exporting path `/gnu/store/np9jwqvxjvasz41nrrh6g3gyn4rpkscw-export-test'
> guix offload: '192.168.1.105' successfully imported '/gnu/store/np9jwqvxjvasz41nrrh6g3gyn4rpkscw-export-test'
> retrieving 1 store item from '192.168.1.105'...
> guix offload: error: build failed: implementation cannot deal with > 32-bit integers

The log has this:

--8<---------------cut here---------------start------------->8---
10529 write(4, "atad\0\0\0\0\0\200\0\0\0\0\0\0", 16) = 16
10529 read(4, "W\1\0\0\0\0\0\0\1\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0nix-archive-1\0\0\0\1\0\0\0\0\0\0\0(\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0type\0\0\0\0\7\0\0\0\0\0\0\0regular\0\10\0\0\0\0\0\0\0contents\23\0\0\0\0\0\0\000192.168.1.105-83353\0\0\0\0\0\1\0\0\0\0\0\0\0)\0\0\0\0\0\0\0NIXE\0\0\0\0007\0\0\0\0\0\0\0/gnu/store/wf774mzvfjpw306y5x06wid80d9k90qq-import-test\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0(protocol-error 1 \"getting status of `/etc/guix/signing-key.sec': Aucun fichier ou dossier de ce "..., 32768) = 352
--8<---------------cut here---------------end--------------->8---

Again the error should be reported…

HTH,
Ludo’.