nixpkgs/pkgs/development/python-modules/pypcap/default.nix

{ stdenv, lib, writeText, buildPythonPackage, fetchPypi, libpcap, dpkt }:

buildPythonPackage rec {
  pname = "pypcap";
  version = "1.2.0";
  name = "${pname}-${version}";

  src = fetchPypi {
    inherit pname version;
    sha256 = "0n01xjgg8n5mf1cs9yg9ljsx1kvir8cm6wwrd2069fawjxdbk0b9";
  };

  patches = [
    # The default setup.py searchs for pcap.h in a static list of default
    # folders. So we have to add the path to libpcap in the nix-store.
    (writeText "libpcap-path.patch"
      ''
      --- a/setup.py
      +++ b/setup.py
      @@ -27,7 +27,8 @@ def recursive_search(path, target_files):

       def get_extension():
           # A list of all the possible search directories
      -    dirs = ['/usr', sys.prefix] + glob.glob('/opt/libpcap*') + \
      +    dirs = ['${libpcap}', '/usr', sys.prefix] + \
      +        glob.glob('/opt/libpcap*') + \
               glob.glob('../libpcap*') + glob.glob('../wpdpack*') + \
               glob.glob('/Applications/Xcode.app/Contents/Developer/Platforms/' +
                         'MacOSX.platform/Developer/SDKs/*')
      '')
  ];

  buildInputs = [ libpcap ];
  nativeBuildInputs = [ dpkt ];

  meta = {
    homepage = https://github.com/pynetwork/pypcap;
    description = "Simplified object-oriented Python wrapper for libpcap";
    license = lib.licenses.bsd3;
    maintainers = with lib.maintainers; [ geistesk ];
  };
}