anchor.diff:  { lib, stdenv
   , buildPackages
   , fetchurl
  -, python3
   , wafHook
   , pkg-config
   , bison
  
positive.code:   ];
  
    buildInputs = [
      python3
      readline
      popt
      dbus
  
negative.code:   ];
  
    nativeBuildInputs = [
      python3Packages.python
      wafHook
      pkg-config
      bison
  