anchor.diff:    buildInputs = with llvmPackages;
       [ llvm clang-unwrapped
         kernel elfutils libelf bcc
  +      libbpf libbfd libopcodes
       ];
   
     nativeBuildInputs = [ cmake pkgconfig flex bison ]
  
positive.code:   #
    cmakeFlags =
      [ "-DBUILD_TESTING=FALSE"
        "-DLIBBCC_INCLUDE_DIRS=${bcc}/include/bcc"
      ];
  
    # nuke the example/reference output .txt files, for the included tools,
  
negative.code: { stdenv, fetchFromGitHub
  , cmake, pkgconfig, flex, bison
  , llvmPackages, kernel, elfutils
  , libelf, libbfd, libbpf, libopcodes, bcc
  }:
  
  stdenv.mkDerivation rec {
    pname = "bpftrace";
    version = "0.11.0";
  
    src = fetchFromGitHub {
      owner  = "iovisor";
      repo   = "bpftrace";
      rev    = "refs/tags/v${version}";
      sha256 = "02f2r731yj3fdc8341id1ksk4dma9rwm2765n2xgx2ldrrz5823y";
    };
  
    enableParallelBuilding = true;
  