bug#41238: guix deploy close ssh session after each store items sent

[Brice Waegeneire <brice@waegenei.re>]

On 2020-05-15 06:59, Oleg Pykhalov wrote:
> Brice Waegeneire <brice@waegenei.re> writes:
> 
>> “guix deploy” bugs; they keep coming! “guix deploy” doesn't make use 
>> of SSH
>> channels[0], instead it close the SSH session each time after sending 
>> store
>> items.
> 
> Did you try a built in SSH's “Control*” feature?
> 
> ssh_config (0)
> 
>   ControlMaster auto
>   ControlPath ~/.ssh/master-%r@%h:%p
>   ControlPersist yes

Of course, it's my default setting for SSH (and the host I tried to 
deploy
to). But “guix deploy” don't support it; it's the core of the issue 
here.

I didn't mention those options in the initial bug report because IFAIK 
the
ssh functionality for “guix deploy” is provided by guile-ssh, a wrapper
around libssh which isn't related to OpenSSH in any way. So the 
“Control*”
options doesn't apply here, instead they talk about channels and 
session[0]
which seems to be the terms used in the SSH specification.

[0]: https://api.libssh.org/stable/libssh_tutor_guided_tour.html