anchor.diff:    for bin in $stapBuild/bin/*; do # hello emacs */
       ln -s $bin $out/bin
     done
  -  rm $out/bin/stap
  +  rm $out/bin/stap $out/bin/dtrace
     makeWrapper $stapBuild/bin/stap $out/bin/stap \
       --add-flags "-r $kernelBuildDir" \
       --prefix PATH : ${lib.makeBinPath [ stdenv.cc.cc stdenv.cc.bintools elfutils gnumake ]}
  +  makeWrapper $stapBuild/bin/dtrace $out/bin/dtrace \
  +    --prefix PYTHONPATH : ${pypkgs}
   ''
  
positive.code: { fetchgit, pkgconfig, gettext, runCommand, makeWrapper
  , elfutils, kernel, gnumake, python2, pythonPackages
  }:
  
  let
  
negative.code:     name = "systemtap-${version}";
      src = fetchgit { inherit url rev sha256; };
    nativeBuildInputs = [ pkgconfig ];
      buildInputs = [ elfutils gettext python2 python2Packages.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 \
  