anchor.diff:      llvm clang-unwrapped kernel
       elfutils luajit netperf iperf
       systemtap.stapBuild flex bash
  +    libbpf
     ];
   
     patches = [
  
positive.code: { lib, stdenv, fetchurl, fetchpatch
  , makeWrapper, cmake, llvmPackages, kernel
  , flex, bison, elfutils, python, luajit, netperf, iperf, libelf
  , systemtap, bash
  }:
  
  python.pkgs.buildPythonApplication rec {
  
negative.code:     "-DREVISION=${version}"
      "-DENABLE_USDT=ON"
      "-DENABLE_CPP_API=ON"
      "-DCMAKE_USE_LIBBPF_PACKAGE=ON"
    ];
  
    postPatch = ''
  