anchor.diff:  }:
   
   let
  -  inherit (libsepol)
  -    se_release
  -    se_url;
  -
  +  release = "20160223";
     version = "2.5";
   in
   stdenv.mkDerivation rec {
     name = "libselinux-${version}";
   
     src = fetchurl {
  -    url = "${se_url}/${se_release}/libselinux-${version}.tar.gz";
  +    url = "https://raw.githubusercontent.com/wiki/SELinuxProject/selinux/"
  +      + "files/releases/${release}/${name}.tar.gz";
       sha256 = "94c9e97706280bedcc288f784f67f2b9d3d6136c192b2c9f812115edba58514f";
     };
   
     nativeBuildInputs = [
  -    python
  +    python2
       swig
     ];
   
  
positive.code: { stdenv
  , fetchurl
  , python
  , swig
  
  , libsepol
  
negative.code:     pcre
    ];
  
    postPatch = ''
      sed -i src/Makefile \
        -e 's|$(LIBDIR)/libsepol.a|${libsepol}/lib/libsepol.a|'
    '';
  
    preBuild = ''
      # Build fails without this precreated
      mkdir -pv $out/include
  
      makeFlagsArray+=(
        "PREFIX=$out"
  