anchor.diff:  }:
   
   let
  -  release = "20160223";
  -  version = "2.5";
  +  release = "20161014";
  +  version = "2.6";
   in
   stdenv.mkDerivation rec {
     name = "libsepol-${version}";
  
positive.code:   src = fetchurl {
      url = "https://raw.githubusercontent.com/wiki/SELinuxProject/selinux/"
        + "files/releases/${release}/${name}.tar.gz";
      sha256 = "2bdeec56d0a08b082b93b40703b4b3329cc5562152f7254d8f6ef6b56afe850a";
    };
  
    nativeBuildInputs = [
  
negative.code:     description = "SELinux binary policy representation library";
      homepage = http://userspace.selinuxproject.org;
      license = licenses.gpl2;
      maintainers = with maintainers; [
        wkennington
      ];
      platforms = with platforms;
        x86_64-linux;
    };
  }
  