anchor.diff:  { stdenv, fetchFromGitHub, fetchpatch, autoreconfHook
   , coreutils, gnugrep, gnused, lm_sensors, net_snmp, openssh, openssl, perl
  -, dnsutils, mysql, zlib, openldap
  +, dnsutils, mysql, zlib, openldap, procps
   , runtimeShell }:
   
   with stdenv.lib;
  
positive.code:   '';
  
    # !!! make openssh a runtime dependency only
    buildInputs = [ dnsutils mysql net_snmp openldap openssh openssl perl zlib ];
  
    nativeBuildInputs = [ autoreconfHook ];
  
  
negative.code:   majorVersion = "2.2";
    minorVersion = ".0";
  
    binPath = makeBinPath [ coreutils gnugrep gnused lm_sensors net_snmp procps ];
  
  in stdenv.mkDerivation rec {
    name = "monitoring-plugins-${majorVersion}${minorVersion}";
  