no passwd command during installation

[Marco van Hulten <marco@hulten.org>]

Hello,

During the installation process of GuixSD 0.13.0, I'd like to login
from another system.  After setting up the network, I start the SSH
server through

    herd start ssh-daemon

as described on
https://www.gnu.org/software/guix/manual/html_node/Preparing-for-Installation.html .

Then I want to set the root password.  The manual tells me to use
passwd, but Bash returns "command not found".  There is also no
ssh-keygen to create SSH keys.


Additionally, it could be useful if the scp or ssh were available from
the installation prompt.  SSH in either direction would give me a way to
copy config.scm to a system where I can e-mail from.  That would be
useful, because I am having problems installing GuixSD (unionfs of 2.1G
gets full during guix system init /mnt/etc/config.scm /mnt --fallback;
the last option was suggested by guix when it couldn't fetch some
package).

-Marco