[bug#29699] [PATCH] guix: offload: Add "status" sub-command.

[Ricardo Wurmus <rekado@elephly.net>]

Ludovic Courtès <ludo@gnu.org> writes:

> Ricardo Wurmus <rekado@elephly.net> skribis:
>
>> * guix/scripts/offload.scm (check-machine-load): New procedure.
>> (guix-offload): Call it when the argument is "status".
>> * doc/guix.texi (Daemon Offload Setup): Document it.
>
> Nice, LGTM!
>
>> +(define (check-machine-load machine-file pred)
>> +  "Print the load of each machine matching PRED in MACHINE-FILE."
>> +  (define (build-machine=? m1 m2)
>> +    (and (string=? (build-machine-name m1) (build-machine-name m2))
>> +         (= (build-machine-port m1) (build-machine-port m2))))
>> +
>> +  ;; A given build machine may appear several times (e.g., once for
>> +  ;; "x86_64-linux" and a second time for "i686-linux"); test them only once.
>> +  (let ((machines (filter pred
>> +                          (delete-duplicates (build-machines machine-file)
>> +                                             build-machine=?))))
>> +    (for-each machine-load machines)))
>
> Perhaps we could also display information from ‘uname’, as in
> <https://git.savannah.gnu.org/cgit/guix/maintenance.git/tree/hydra/machine-status.scm#n118>?

I didn’t even notice machine-status.scm!  Should we just fold that into
offload.scm instead of accepting my simplistic “check-machine-load”
procedure?

--
Ricardo

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