[bug#45323] [PATCH] substitute: Reuse connections for '--query'.

[Christopher Baines <mail@cbaines.net>]

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Ludovic Courtès <ludo@gnu.org> writes:

> Hi!
>
> Christopher Baines <mail@cbaines.net> skribis:
>
>> The Guix Build Coordinator uses code from this script, and I'm sometimes
>> seeing exceptions like [1] when running with these changes. This is when
>> calling lookup-narinfos.
>>
>> 1:
>> #<&compound-exception components: (#<&error> #<&irritants irritants: (#<gnutls-error-enum The specified session has been invalidated for some
>> reason.> write_to_session_record_port)> #<&exception-with-kind-and-args kind: gnutls-error args: (#<gnutls-error-enum The specified session hasbeen invalidated for some reason.> write_to_session_record_port)>)>,
>>
>> When this happens, things seem to get stuck and retrying calling
>> lookup-narinfos leads to the same exception. I'm guessing this might be
>> happening because the broken connection is being cached and reused.
>
> Ah, that looks like another thing that might break.  Does the patch
> below help?

I've tried using it, and I haven't spotted any problems yet, so I
believe so.

Thanks,

Chris

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