anchor.diff:      usersWithKeys = attrValues (flip filterAttrs config.users.extraUsers (n: u:
         length u.openssh.authorizedKeys.keys != 0 || length u.openssh.authorizedKeys.keyFiles != 0
       ));
  -  }; map mkAuthKeyFile usersWithKeys;
  +  in map mkAuthKeyFile usersWithKeys;
   
   in
   
  
positive.code:           The set of system-wide known SSH hosts.
          '';
          example = [
            { 
              hostNames = [ "myhost" "myhost.mydomain.com" "10.10.1.4" ];
              publicKeyFile = ./pubkeys/myhost_ssh_host_dsa_key.pub;
            }
            { 
              hostNames = [ "myhost2" ];
              publicKeyFile = ./pubkeys/myhost2_ssh_host_dsa_key.pub;
            }
  
negative.code:     };
    };
  
    authKeysFiles = let
      mkAuthKeyFile = u: {
        target = "ssh/authorized_keys.d/${u.name}";
        mode = "0444";
  