Re: guix offload, (test returned #<unspecified>)

[Ludovic Courtès]

Hi Myles,

Myles English <address@hidden> skribis:

> Two hosts, setup the same as far as I can see, behave differently when
> trying to offload builds, any idea how I can get more information on
> what the #<unspecified> might indicate?  Looking at
> guix/scripts/offload.scm:551 suggests the result is not a string.
>
> $ guix offload test
> guix offload: testing 2 build machines defined in '/etc/guix/machines.scm'...
> guix offload: 'host1.mydomain.co.uk' is running guile (GNU Guile) 2.0.13
> guix offload: 'host2.mydomain.co.uk' is running guile (GNU Guile) 2.0.13
> guix offload: Guix is usable on 'host1.mydomain.co.uk' (test returned 
> "/gnu/store/883yjkl46dxw9mzykykmbs0yzwyxm17z-test")
> guix offload: error: failed to use Guix module on 'host2.mydomain.co.uk'
> (test returned #<unspecified>)

What you see here most likely means that host2 threw an exception while
executing this code:

  http://git.savannah.gnu.org/cgit/guix.git/tree/guix/scripts/offload.scm#n543

The reason could be:

  1. That the (guix …) modules could not be found in the search path
     (your tests suggest this is not the case);

  2. That an exception was thrown, for instance because the ‘with-store’
     form failed to connect to the daemon on that machine (is the daemon
     running on that machine? Is it listening on
     /var/guix/daemon-socket/socket and not some other place?).

We should definitely improve that and provide details about the
exception, at least.

HTH!

Ludo’.