{ lib
, stdenv
, buildPythonPackage
, fetchPypi
, openssl
, cryptography
, pyasn1
, idna
, pytestCheckHook
, pretend
, flaky
, glibcLocales
, six
}:

buildPythonPackage rec {
  pname = "pyopenssl";
  version = "21.0.0";

  src = fetchPypi {
    pname = "pyOpenSSL";
    inherit version;
    sha256 = "5e2d8c5e46d0d865ae933bef5230090bdaf5506281e9eec60fa250ee80600cb3";
  };

  outputs = [ "out" "dev" ];

  # Seems to fail unpredictably on Darwin. See https://hydra.nixos.org/build/49877419/nixlog/1
  # for one example, but I've also seen ContextTests.test_set_verify_callback_exception fail.
  doCheck = !stdenv.isDarwin;

  nativeBuildInputs = [ openssl ];
  propagatedBuildInputs = [ cryptography pyasn1 idna six ];

  checkInputs = [ pytestCheckHook pretend flaky glibcLocales ];

  preCheck = ''
    export LANG="en_US.UTF-8"
  '';

  disabledTests = [
    # https://github.com/pyca/pyopenssl/issues/692
    # These tests, we disable always.
    "test_set_default_verify_paths"
    "test_fallback_default_verify_paths"
    # https://github.com/pyca/pyopenssl/issues/768
    "test_wantWriteError"
    # https://github.com/pyca/pyopenssl/issues/1043
    "test_alpn_call_failure"
  ] ++ lib.optionals (lib.hasPrefix "libressl" openssl.meta.name) [
    # https://github.com/pyca/pyopenssl/issues/791
    # These tests, we disable in the case that libressl is passed in as openssl.
    "test_op_no_compression"
    "test_npn_advertise_error"
    "test_npn_select_error"
    "test_npn_client_fail"
    "test_npn_success"
    "test_use_certificate_chain_file_unicode"
    "test_use_certificate_chain_file_bytes"
    "test_add_extra_chain_cert"
    "test_set_session_id_fail"
    "test_verify_with_revoked"
    "test_set_notAfter"
    "test_set_notBefore"
  ] ++ lib.optionals (lib.versionAtLeast (lib.getVersion openssl.name) "1.1") [
    # these tests are extremely tightly wed to the exact output of the openssl cli tool, including exact punctuation.
    "test_dump_certificate"
    "test_dump_privatekey_text"
    "test_dump_certificate_request"
    "test_export_text"
  ] ++ lib.optionals stdenv.is32bit [
    # https://github.com/pyca/pyopenssl/issues/974
    "test_verify_with_time"
  ];

  meta = with lib; {
    description = "Python wrapper around the OpenSSL library";
    homepage = "https://github.com/pyca/pyopenssl";
    license = licenses.asl20;
    maintainers = with maintainers; [ SuperSandro2000 ];
  };
}