bug#26548: [PATCH] install: Enable SSH in installation image.

[ludo@gnu.org (Ludovic Courtès)]

Hello!

Marius Bakke <mbakke@fastmail.com> skribis:

> Hi Guix! This patch adds an SSH server to the installation image
> to aid remote installations as requested in
> https://lists.gnu.org/archive/html/help-guix/2017-01/msg00047.html
>
> lsh-service depends on networking, so I pulled in a DHCP client too.
> It increases the image size by about 29MiB.
>
> * gnu/system/install.scm (%installation-services): Add DHCP-CLIENT-SERVICE
> and LSH-SERVICE.

[...]

> +          ;; Add a DHCP client for networking.
> +          (dhcp-client-service)

This is a problem: in the installation instructions, we tell people to
configure networking (possibly wireless) by hand, so we cannot expect
the DHCP client to work directly when the image is booted.

Also, the installation instructions would need to be updated.

However, what we could do, instead, is to add an SSH service that is off
by default (with (start? #f)) and does not depend on ‘networking’.  That
way, people would only need to type

  herd start ssh-daemon

to get the thing up and running.  WDYT?

> +          ;; Add an SSH server to facilitate remote installs.
> +          (lsh-service #:port-number 22

I agree with others that we should use OpenSSH here.  :-)

Thanks,
Ludo’.