anchor.diff:  , which
   
   , kmod
  +, systemd_lib
   , zlib
   }:
   
   let
  -  name = "pciutils-3.5.5"; # with database from 2016-01
  +  name = "pciutils-3.5.6"; # with database from 2017-11
   
     tarballUrls = [
       "mirror://kernel/software/utils/pciutils/${name}.tar"
  
positive.code: 
    buildInputs = [
      kmod
      zlib
    ];
  
    preBuild = ''
      makeFlagsArray+=(
        "SHARED=yes"
        "PREFIX=$out"
      )
    '';
  
    installTargets = [
      "install"
  
negative.code: 
    src = fetchurl {
      urls = map (n: "${n}.xz") tarballUrls;
      hashOutput = false;
      sha256 = "f346eeb90cce0910c05b877fe49eadc760fa084c0455fd313e39d4b2c2d4bb21";
    };
  
    nativeBuildInputs = [
  