anchor.diff:          -e s,/usr,$out, \
           -e /init.d/d \
           -e /depmod/d \
  +        -e /netatop.service/d \
           Makefile
     '';
   
  
positive.code: { stdenv, fetchurl, kernel, zlib }:
  
  let
    version = "2.0";
  in
  
  stdenv.mkDerivation {
  
negative.code: 
    src = fetchurl {
      url = "http://www.atoptool.nl/download/netatop-${version}.tar.gz";
      sha256 = "0qjw8glfdmngfvbn1w63q128vxdz2jlabw13y140ga9i5ibl6vvk";
    };
  
    buildInputs = [ zlib ];
  