anchor.diff:      "--localstatedir=/var"
       "--disable-silent-rules"
       "--enable-bfd"
  -    #"--enable-snmp"
  -    #"--enable-snmp-vrrp"
  -    #"--enable-snmp-checker"
  -    #"--enable-snmp-rfc"
  -    #"--enable-snmp-rfcv2"
  -    #"--enable-snmp-rfcv3"
  +    "--enable-snmp"
  +    "--enable-snmp-vrrp"
  +    "--enable-snmp-checker"
  +    "--enable-snmp-rfc"
  +    "--enable-snmp-rfcv2"
  +    "--enable-snmp-rfcv3"
       "--enable-dbus"
  +    "--enable-regex"
  +    "--enable-regex-timers"
       "--enable-json"
       "--enable-sha1"
  +    "--enable-dynamic-linking"
  +    "--enable-netlink-timers"
  +    "--with-init=systemd"
     ];
  +
  +  preConfigure = ''
  +    configureFlagsArray+=("--with-systemdsystemunitdir=$out/lib/systemd/system")
  +  '';
   
     preInstall = ''
       installFlagsArray+=(
  
positive.code:     json-c
      libnfnetlink
      libnl
      #net-snmp
      openssl
    ];
  
    configureFlags = [
  
negative.code:         outputHash
          outputHashAlgo;
        fullOpts = {
          md5Confirm = "2a6e1a159922afd78333cd683f9f2732";
        };
      };
    };
  