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path: root/pkgs/development/python-modules/cryptography/default.nix
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{ stdenv
, buildPythonPackage
, fetchPypi
, openssl
, cryptography_vectors
, darwin
, asn1crypto
, packaging
, six
, pythonOlder
, enum34
, ipaddress
, isPyPy
, cffi
, pytest
, pretend
, iso8601
, pytz
, hypothesis
}:

buildPythonPackage rec {
  # also bump cryptography_vectors
  pname = "cryptography";
  version = "2.5";

  src = fetchPypi {
    inherit pname version;
    sha256 = "00c4d7gvsymlaw0r13zrm32dcnarmpayjyrh65yymlmr6mrbcij9";
  };

  outputs = [ "out" "dev" ];

  buildInputs = [ openssl cryptography_vectors ]
             ++ stdenv.lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
  propagatedBuildInputs = [
    asn1crypto
    packaging
    six
  ] ++ stdenv.lib.optional (pythonOlder "3.4") enum34
  ++ stdenv.lib.optional (pythonOlder "3.3") ipaddress
  ++ stdenv.lib.optional (!isPyPy) cffi;

  checkInputs = [
    pytest
    pretend
    iso8601
    pytz
    hypothesis
  ];

  checkPhase = ''
    py.test --disable-pytest-warnings tests
  '';

  # The test assumes that if we're on Sierra or higher, that we use `getentropy`, but for binary
  # compatibility with pre-Sierra for binary caches, we hide that symbol so the library doesn't
  # use it. This boils down to them checking compatibility with `getentropy` in two different places,
  # so let's neuter the second test.
  postPatch = ''
    substituteInPlace ./tests/hazmat/backends/test_openssl.py --replace '"16.0"' '"99.0"'
  '';

  # IOKit's dependencies are inconsistent between OSX versions, so this is the best we
  # can do until nix 1.11's release
  __impureHostDeps = [ "/usr/lib" ];

  meta = with stdenv.lib; {
    description = "A package which provides cryptographic recipes and primitives";
    longDescription = ''
      Cryptography includes both high level recipes and low level interfaces to
      common cryptographic algorithms such as symmetric ciphers, message
      digests, and key derivation functions.
      Our goal is for it to be your "cryptographic standard library". It
      supports Python 2.7, Python 3.4+, and PyPy 5.3+.
    '';
    homepage = https://github.com/pyca/cryptography;
    license = with licenses; [ asl20 bsd3 psfl ];
    maintainers = with maintainers; [ primeos ];
  };
}