anchor.diff:  
     installTargets = [ "install" ] ++ optional enablePython "install-pywrap";
   
  +  postInstall = ''
  +    moveToOutput "${python.sitePackages}" "$py"
  +  '';
  +
     meta = removeAttrs libsepol.meta ["outputsToInstall"] // {
       description = "SELinux core library";
     };
  
positive.code:     "MAN3DIR=$(man)/share/man/man3"
      "MAN5DIR=$(man)/share/man/man5"
      "MAN8DIR=$(man)/share/man/man8"
      "PYSITEDIR=$(py)/${python.sitePackages}"
      "SBINDIR=$(bin)/sbin"
      "SHLIBDIR=$(out)/lib"
  
  
negative.code: 
  stdenv.mkDerivation rec {
    name = "libselinux-${version}";
    version = "2.8";
    inherit (libsepol) se_release se_url;
  
    outputs = [ "bin" "out" "dev" "man" "py" ];
  
    src = fetchurl {
      url = "${se_url}/${se_release}/libselinux-${version}.tar.gz";
      sha256 = "1qc7c6lzvhs9sdgqalg1rxni3a88d989hgrw5f8i1kj3fvn9dnri";
    };
  
    nativeBuildInputs = [ pkgconfig ] ++ optionals enablePython [ swig python ];
  