anchor.diff:      "DESTDIR=$(out)"
       "PERLLIB=$(out)/${perlPackages.perl.libPrefix}"
       "PERL=${perlPackages.perl.outPath}/bin/perl"
  -    "PYTHON=${python2.outPath}/bin/python"
  +    "PYTHON=${python3.interpreter}"
       "RUBY=${ruby.outPath}/bin/ruby"
       "JAVARUN=${jre.outPath}/bin/java"
       "PLUGINUSER=munin"
  
positive.code: { lib, stdenv, fetchFromGitHub, makeWrapper, which, coreutils, rrdtool, perlPackages
  , python2, ruby, jre, nettools, bc
  }:
  
  stdenv.mkDerivation rec {
  
negative.code:     perlPackages.ListMoreUtils
      perlPackages.LWP
      perlPackages.DBDPg
      python3
      ruby
      jre
      # tests
  