anchor.diff:        serviceConfig.ExecStart = "${cfg.package}/sbin/smtpd -d -f ${conf} ${args}";
         environment.OPENSMTPD_PROC_PATH = "${procEnv}/libexec/opensmtpd";
       };
  -
  -    environment.systemPackages = mkIf cfg.addSendmailToSystemPath [ sendmail ];
     };
   }
  
positive.code:         group = "smtpq";
        };
      };
  
      systemd.tmpfiles.rules = [
        "d /var/spool/smtpd 711 root - - -"
  
negative.code: 
    ###### interface
  
    imports = [
      (mkRenamedOptionModule [ "services" "opensmtpd" "addSendmailToSystemPath" ] [ "services" "opensmtpd" "setSendmail" ])
    ];
  
    options = {
  
      services.opensmtpd = {
  