anchor.diff:  { fetchgit, pkgconfig, gettext, runCommand, makeWrapper
  -, elfutils, kernel, gnumake, python2, pythonPackages
  +, elfutils, kernel, gnumake, python2, python2Packages
   }:
   
   let
  
positive.code:     done
    '';
  
  in runCommand "systemtap-${kernel.version}-${version}" {
    inherit stapBuild kernelBuildDir;
    buildInputs = [ makeWrapper ];
  
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 \
  