anchor.diff:  #         I not see any reason (for now) to backport 8.41.
   
   stdenv.mkDerivation rec {
  -  name = "${pname}-${version}";
     pname = "hyperscan";
  -  version = "5.1.0";
  +  version = "5.1.1";
   
     src = fetchFromGitHub {
       owner = "intel";
  -    repo = "hyperscan";
  -    sha256 = "0r2c7s7alnq14yhbfhpkq6m28a3pyfqd427115k0754afxi82vbq";
  +    repo = pname;
  +    sha256 = "11adkz5ln2d2jywwlmixfnwqp5wxskq1104hmmcpws590lhkjv6j";
       rev = "v${version}";
     };
   
     outputs = [ "out" "dev" ];
   
     buildInputs = [ boost ];
  -  nativeBuildInputs = [ cmake ragel python27 ];
  +  nativeBuildInputs = [
  +    cmake ragel python3
  +    # Consider simply using busybox for these
  +    # Need at least: rev, sed, cut, nm
  +    coreutils gnused utillinux
  +  ];
   
     cmakeFlags = [
       "-DFAT_RUNTIME=ON"
       "-DBUILD_AVX512=ON"
  -    "-DBUILD_STATIC_AND_SHARED=ON"
  -  ];
  +  ]
  +  ++ stdenv.lib.optional (withStatic) "-DBUILD_STATIC_AND_SHARED=ON"
  +  ++ stdenv.lib.optional (!withStatic) "-DBUILD_SHARED_LIBS=ON";
   
  -  prePatch = ''
  +  postPatch = ''
       sed -i '/examples/d' CMakeLists.txt
  +    substituteInPlace libhs.pc.in \
  +      --replace "libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@" "libdir=@CMAKE_INSTALL_LIBDIR@" \
  +      --replace "includedir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@" "includedir=@CMAKE_INSTALL_INCLUDEDIR@"
     '';
   
  -  postInstall = ''
  -    mkdir -p $dev/lib
  -    mv $out/lib/*.a $dev/lib/
  -    ln -sf $out/lib/libhs.so $dev/lib/
  -    ln -sf $out/lib/libhs_runtime.so $dev/lib/
  -  '';
  -
  -  postFixup = ''
  -    sed -i "s,$out/include,$dev/include," $dev/lib/pkgconfig/libhs.pc
  -    sed -i "s,$out/lib,$dev/lib," $dev/lib/pkgconfig/libhs.pc
  -  '';
  -
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "High-performance multiple regex matching library";
       longDescription = ''
         Hyperscan is a high-performance multiple regex matching library.
  
positive.code: { lib, stdenv, fetchFromGitHub, cmake, ragel, python27
  , boost
  }:
  
  # NOTICE: pkgconfig, pcap and pcre intentionally omitted from build inputs
  
negative.code:       Hyperscan is typically used in a DPI library stack.
      '';
  
      homepage = "https://www.hyperscan.io/";
      maintainers = with maintainers; [ avnik ];
      platforms = [ "x86_64-linux" ]; # can't find nm on darwin ; might build on aarch64 but untested
      license = licenses.bsd3;
    };
  }
  