Doesn't copy `authorized_keys` from `/etc/ssh/authorized_keys.d/${sshUser}`

[DerRockWolf]

My custom installer ISO has authorized keys for the nixos user set via users.users.nixos.openssh.authorizedKeys.keys but none for root.
In such cases it would be helpful if nixos-anywhere would additionally try to copy over the authorized_keys file from /etc/ssh/authorized_keys.d/$USER.

nixos-anywhere/src/nixos-anywhere.sh

Lines 1030 to 1036 in e86fad4

	# Installation will fail if non-root user is used for installer.
	# Switch to root user by copying authorized_keys.
	if [[ ${isInstaller} == "y" ]] && [[ ${sshUser} != "root" ]]; then
	# Allow copy to fail if authorized_keys does not exist, like if using /etc/ssh/authorized_keys.d/
	runSsh "${maybeSudo} mkdir -p /root/.ssh; ${maybeSudo} cp ~/.ssh/authorized_keys /root/.ssh || true"
	sshConnection="root@${sshHost}"
	fi

[Nulifier]

I'm running into the same issue. The comment seems to indicate this was expected that this command could fail, but there is no contingency for it. Once this returns, it starts using ssh root@host which will fail.

I'm planning on temporarily using the same authorized ssh keys for root.