bug#62476: ‘guix substitute’ poorly handles premature TLS termination

[Ludovic Courtès]

Ludovic Courtès <ludovic.courtes@inria.fr> skribis:

> I got a report showing this:
>
>> $ guix shell …
>> […]
>> substitute: mise à jour des substituts depuis « https://ci.guix.gnu.org »... 
>>   0.0 %guix substitute: erreur : Erreur TLS dans la procédure « handshake » 
>> : La connexion TLS n’a pas été terminée correctement.
>> guix shell: erreur : 
>> `/gnu/store/aca6i8lqgdfy0gwd4m8ql3kv5a0gp6c9-guix-command substitute' died 
>> unexpectedly
>
> This corresponds to GnuTLS exception ‘error/premature-termination’ while
> connecting to a substitute server, from ‘fetch-narinfos’.
>
> Why ‘handshake’ fails, I don’t know, but at any rate ‘guix substitute’
> shouldn’t error out when that happens; preferably, it should skip that
> substitute server and keep going, like it does for other transient
> networking errors in ‘call-with-connection-error-handling’.

Fixed in af91c2d540ef437e3f663b2c18c76dc2b94e13d2.

Ludo’.