bug#30522: Guile-SSH retries upon “guile --listen” failure to start

[Ludovic Courtès]

Hello Artyom & Marius,

Marius Bakke <address@hidden> skribis:

> Ludovic Courtès <address@hidden> writes:
>
>>> It would still be good with a better failure mode, but I'll file this
>>> under "pebkac" for now.
>>
>> Yes, I’m surprised it ended up looping.  Did you try to strace it or
>> something to see what was going on?  Perhaps guile failed to start
>> altogether and Guile-SSH kept retrying?
>
> Indeed.  Guile-SSH kept trying to start `guile --listen` over and over.

Artyom, do you think we could arrange for Guile-SSH to properly detect
failure to start ‘guile --listen’ and report it instead of retrying?

Perhaps it could check the exit code of ‘guile --listen’ and distinguish
127 (“command not found”) from other exit codes?

(For more context, see <https://bugs.gnu.org/30522>.)

Thanks,
Ludo’.