On GuixSD running Gnome: the command 'ssh <remote>' results in error sign_and_send_pubkey: signing failed: agent refused operation and then falls back to password authentication.
(Work-around is to manually start the openssh agent 'eval $(ssh-agent)' after which 'ssh <remote>' is successfull. From this I conclude that the key pair used and the .ssh/config entry for <remote> are OK.)
