anchor.diff:  { stdenv
   , fetchurl
  -, python
  +, lib
  +, python2
   , swig
   
   , libsepol
  
positive.code: }:
  
  let
    inherit (libsepol)
      se_release
      se_url;
  
    version = "2.5";
  in
  stdenv.mkDerivation rec {
    name = "libselinux-${version}";
  
    src = fetchurl {
      url = "${se_url}/${se_release}/libselinux-${version}.tar.gz";
      sha256 = "94c9e97706280bedcc288f784f67f2b9d3d6136c192b2c9f812115edba58514f";
    };
  
    nativeBuildInputs = [
      python
      swig
    ];
  
  
negative.code:     "install-pywrap"
    ];
  
    meta = with lib; {
      description = "SELinux userland library";
      homepage = http://userspace.selinuxproject.org;
      license = licenses.gpl2;
      maintainers = with maintainers; [ ];
      platforms = with platforms;
        i686-linux
        ++ x86_64-linux;
    };
  }
  