anchor.diff:  
     meta = with lib; {
       description = "Clients and server for the SNMP network monitoring protocol";
  -    homepage = "http://net-snmp.sourceforge.net/";
  +    homepage = "http://www.net-snmp.org/";
       license = licenses.bsd3;
       platforms = platforms.linux;
     };
  
positive.code: { lib, stdenv, fetchurl, fetchpatch, autoreconfHook, removeReferencesTo
  , file, openssl, perl, perlPackages, unzip, nettools, ncurses }:
  
  stdenv.mkDerivation rec {
    pname = "net-snmp";
    version = "5.9.1";
  
  
negative.code:     substituteInPlace testing/fulltests/support/simple_TESTCONF.sh --replace "/bin/netstat" "${nettools}/bin/netstat"
    '';
  
    nativeBuildInputs = [ autoreconfHook nettools removeReferencesTo gnused file ];
    buildInputs = [ openssl ]
      ++ lib.optional withPerlTools perlWithPkgs;
  
    enableParallelBuilding = true;
    doCheck = false;  # tries to use networking
  