anchor.diff:  , dpdk, libbpf, libconfig, libpcap, numactl, openssl, zlib, libbsd, libelf, jansson
   }: let
     dpdk_19_11 = dpdk.overrideAttrs (old: rec {
  -    version = "19.11";
  +    version = "19.11.12";
       src = fetchurl {
         url = "https://fast.dpdk.org/rel/dpdk-${version}.tar.xz";
  -      sha256 = "sha256-RnEzlohDZ3uxwna7dKNFiqfAAswh4pXFHjvWVJexEqs=";
  +      sha256 = "sha256-F9m2+MZi3n0psPIwjWwhiIbbNkoGlxqtru2OlV7TbzQ=";
       };
       mesonFlags = old.mesonFlags ++ [
         "-Denable_docs=false"
  
positive.code:     description = "Open Data Plane optimized for DPDK";
      homepage = "https://www.opendataplane.org";
      license = licenses.bsd3;
      platforms =  platforms.linux;
      maintainers = [ maintainers.abuibrahim ];
    };
  }
  
negative.code: 
  in stdenv.mkDerivation rec {
    pname = "odp-dpdk";
    version = "1.35.0.0_DPDK_19.11";
  
    src = fetchurl {
      url = "https://git.linaro.org/lng/odp-dpdk.git/snapshot/${pname}-${version}.tar.gz";
      sha256 = "sha256-R4cRfz0uUDbeQmJfFSIAmq3KfD6CE9hIW2yvFqL+b0M=";
    };
  
    nativeBuildInputs = [
  