anchor.diff:      inherit (kernel) src version;
   
       nativeBuildInputs = [ makeWrapper ];
  +    buildInputs = [ (if lib.versionOlder version "4.19" then python2 else python3) ];
   
       # as of 4.9 compilation will fail due to -Werror=format-security
       hardeningDisable = [ "format" ];
  
positive.code: { stdenv, lib, python, kernel, makeWrapper, writeText
  , gawk, iproute2 }:
  
  let
  
negative.code:       install -Dm755 lsvmbus             $out/bin/lsvmbus
        install -Dm755 hv_get_dhcp_info.sh $out/${libexec}/hv_get_dhcp_info
        install -Dm755 hv_get_dns_info.sh  $out/${libexec}/hv_get_dns_info
  
        runHook postInstall
      '';
  