anchor.diff:  #
     libnatspec = callPackage ../development/libraries/libnatspec { };
   #
  -#  libndp = callPackage ../development/libraries/libndp { };
  +  libndp = callPackage ../development/libraries/libndp { };
   #
   #  libnfc = callPackage ../development/libraries/libnfc { };
   #
  
positive.code: #
  #  iproute = callPackage ../os-specific/linux/iproute { };
  #
  #  iptables = callPackage ../os-specific/linux/iptables { };
  #
  #  ipset = callPackage ../os-specific/linux/ipset { };
  #
  
negative.code: #
  #  opentsdb = callPackage ../tools/misc/opentsdb {};
  #
    openvpn = callPackage ../tools/networking/openvpn { };
  #
  #  openvpn_learnaddress = callPackage ../tools/networking/openvpn/openvpn_learnaddress.nix { };
  #
  