anchor.diff:          default = "";
           description = "Verbatim contents of <filename>sshd_config</filename>.";
         };
  -      
  +
       };
   
     };
  
positive.code: {
  
    ###### interface
    
    options = {
    
      services.openssh = {
  
        enable = mkOption {
  
negative.code: 
          daemonType = "fork";
  
          exec =
            ''
              ${pkgs.openssh}/sbin/sshd -h /etc/ssh/ssh_host_dsa_key \
                -f ${pkgs.writeText "sshd_config" cfg.extraConfig}
  