anchor.diff:    pythonLxmlEnv = buildPackages.python3Packages.python.withPackages ( ps: with ps; [ python3Packages.lxml ]);
   
   in stdenv.mkDerivation rec {
  -  version = "239.20181031";
  +  version = "239";
     name = "systemd-${version}";
   
     # When updating, use https://github.com/systemd/systemd-stable tree, not the development one!
  
positive.code:   src = fetchFromGitHub {
      owner = "NixOS";
      repo = "systemd";
      rev = "nixos-v${version}";
      sha256 = "1rzl0iqrpa4ajvama5k3cb3yc7893c55kzcxkl3cyavpdzsw5505";
    };
  
    outputs = [ "out" "lib" "man" "dev" ];
  
negative.code:     "-Dsulogin-path=${utillinux}/bin/sulogin"
      "-Dmount-path=${utillinux}/bin/mount"
      "-Dumount-path=${utillinux}/bin/umount"
    ];
  
    preConfigure = ''
  