Christopher Allan Webber <cwebber@dustycloud.org> writes:

> Maxim Cournoyer writes:
>
>> +1. Although it means the keys will have to be copied by another mean
>> than the "ssh-copy-id" script. Maybe the configuration could accept
>> the public key? :) I haven't checked if this is already possible.
>
> We have discussed in the past having some service that just copies some
> static files on init.  That would be enough to set up public keys
> appropriately.

I think that can already be done with 'special-file-service-type'.

https://lists.gnu.org/archive/html/guix-devel/2017-02/msg00332.html

Another approach could be a small program that reads a configuration
file and can also pull from e.g. the ec2 metadata service which should
work with many "cloud" providers. Similar to "cloud-init" but Guile of
course :)