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path: root/pkgs/development/python-modules/nplusone/default.nix
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{
  lib,
  blinker,
  buildPythonPackage,
  django,
  fetchFromGitHub,
  flake8,
  flask-sqlalchemy,
  isPy27,
  mock,
  peewee,
  pytest-django,
  pytestCheckHook,
  six,
  sqlalchemy,
  webtest,
}:

buildPythonPackage rec {
  pname = "nplusone";
  version = "1.0.0";
  format = "setuptools";
  disabled = isPy27;

  src = fetchFromGitHub {
    owner = "jmcarp";
    repo = "nplusone";
    rev = "v${version}";
    sha256 = "0qdwpvvg7dzmksz3vqkvb27n52lq5sa8i06m7idnj5xk2dgjkdxg";
  };

  propagatedBuildInputs = [
    blinker
    six
  ];

  nativeCheckInputs = [
    flake8
    flask-sqlalchemy
    mock
    peewee
    pytest-django
    pytestCheckHook
    sqlalchemy
    webtest
  ];

  # The tests assume the source code is in an nplusone/ directory. When using
  # the Nix sandbox, it will be in a source/ directory instead, making the
  # tests fail.
  prePatch = ''
    substituteInPlace tests/conftest.py \
      --replace nplusone/tests/conftest source/tests/conftest
  '';

  postPatch = ''
    substituteInPlace pytest.ini \
      --replace "python_paths" "pythonpath" \
      --replace "--cov nplusone --cov-report term-missing" ""
  '';

  disabledTests = [
    # Tests are out-dated
    "test_many_to_one"
    "test_many_to_many"
    "test_eager_join"
    "test_eager_subquery"
    "test_eager_subquery_unused"
    "test_many_to_many_raise"
    "test_many_to_many_whitelist_decoy"
    "test_many_to_one_subquery"
    "test_many_to_one_reverse_subquery"
    "test_many_to_many_subquery"
    "test_many_to_many_reverse_subquery"
    "test_profile"
  ];

  pythonImportsCheck = [ "nplusone" ];

  meta = with lib; {
    description = "Detecting the n+1 queries problem in Python";
    homepage = "https://github.com/jmcarp/nplusone";
    maintainers = with maintainers; [ cript0nauta ];
    license = licenses.mit;
    broken = lib.versionAtLeast django.version "4";
  };
}