anchor.diff:    stapBuild = stdenv.mkDerivation {
       name = "systemtap-${version}";
       src = fetchgit { inherit url rev sha256; };
  -    buildInputs = [ elfutils pkgconfig gettext ];
  +    buildInputs = [ elfutils pkgconfig gettext python2 pythonPackages.setuptools ];
  +    # FIXME: Workaround for bug in kbuild, where quoted -I"/foo" flags would get mangled in out-of-tree kbuild dirs
  +    postPatch = ''
  +      substituteInPlace buildrun.cxx --replace \
  +        'o << "EXTRA_CFLAGS += -I\"" << s.runtime_path << "\"" << endl;' \
  +        'o << "EXTRA_CFLAGS += -I" << s.runtime_path << endl;'
  +    '';
       enableParallelBuilding = true;
     };
   
  
positive.code:   rm $out/bin/stap
    makeWrapper $stapBuild/bin/stap $out/bin/stap \
      --add-flags "-r $kernelBuildDir" \
      --prefix PATH : ${lib.makeBinPath [ stdenv.cc.cc elfutils gnumake ]}
  ''
  
negative.code: { fetchgit, pkgconfig, gettext, runCommand, makeWrapper
  , elfutils, kernel, gnumake, python2, pythonPackages, binutils }:
  let
    ## fetchgit info
    url = git://sourceware.org/git/systemtap.git;
    rev = "276ed27a3cc64531542ab73bb36bb04784e79bbc";
    sha256 = "11967dx3cjs96v3ncfljw0h7blsgg9wm8g9z2270q9a90988g2c2";
    version = "2017-02-04";
  
    inherit (kernel) stdenv;
    inherit (stdenv) lib;
  