pyproject.toml

[build-system]
requires = [
    # NOTE: this needs to be kept in sync with mypy-requirements.txt
    # and build-requirements.txt, because those are both needed for
    # self-typechecking :/
    "setuptools >= 75.1.0",
    # the following is from mypy-requirements.txt/setup.py
    "typing_extensions>=4.6.0",
    "mypy_extensions>=1.0.0",
    "tomli>=1.1.0; python_version<'3.11'",
    # the following is from build-requirements.txt
    "types-psutil",
    "types-setuptools",
]
build-backend = "setuptools.build_meta"

[tool.black]
line-length = 99
target-version = ["py38", "py39", "py310", "py311", "py312"]
skip-magic-trailing-comma = true
force-exclude = '''
^/mypy/typeshed|
^/mypyc/test-data|
^/test-data
'''

[tool.ruff]
line-length = 99
target-version = "py38"
fix = true

extend-exclude = [
  "@*",
  # Sphinx configuration is irrelevant
  "docs/source/conf.py",
  "mypyc/doc/conf.py",
  # tests have more relaxed styling requirements
  # fixtures have their own .pyi-specific configuration
  "test-data/*",
  "mypyc/test-data/*",
  # typeshed has its own .pyi-specific configuration
  "mypy/typeshed/*",
]

[tool.ruff.lint]
select = [
  "E",       # pycodestyle (error)
  "F",       # pyflakes
  "W",       # pycodestyle (warning)
  "B",       # flake8-bugbear
  "I",       # isort
  "RUF100",  # Unused noqa comments
  "PGH004",  # blanket noqa comments
  "UP",      # pyupgrade
  "C4",      # flake8-comprehensions
  "SIM201", "SIM202",  # simplify comparisons involving not
  "ISC001",  # implicitly concatenated string
  "RET501", "RET502",  # better return None handling
]

ignore = [
  "B007",  # Loop control variable not used within the loop body.
  "B011",  # Don't use assert False
  "B023",  # Function definition does not bind loop variable
  "E2",    # conflicts with black
  "E402",  # module level import not at top of file
  "E501",  # conflicts with black
  "E721",  # Use `is` and `is not` for type comparisons, or `isinstance()` for isinstance checks
  "E731",  # Do not assign a `lambda` expression, use a `def`
  "E741",  # Ambiguous variable name
  "UP031", # Use format specifiers instead of percent format
  "UP032", # 'f-string always preferable to format' is controversial
  "C416",  # There are a few cases where it's nice to have names for the dict items
]

unfixable = [
    "F841",  # unused variable. ruff keeps the call, but mostly we want to get rid of it all
    "F601",  # automatic fix might obscure issue
    "F602",  # automatic fix might obscure issue
    "B018",  # automatic fix might obscure issue
    "UP036", # sometimes it's better to just noqa this
]

[tool.ruff.lint.isort]
combine-as-imports = true
extra-standard-library = ["typing_extensions"]

[tool.check-manifest]
ignore = ["**/.readthedocs.yaml"]

[tool.pytest.ini_options]
minversion = "7.0.0"
testpaths = ["mypy/test", "mypyc/test"]
python_files = 'test*.py'

# Where do the test cases come from?  We provide our own collection
# logic by implementing `pytest_pycollect_makeitem` in mypy.test.data;
# the test files import that module, and pytest sees the magic name
# and invokes it at the relevant moment.  See
# https://doc.pytest.org/en/latest/how-to/writing_plugins.html#collection-hooks

# Both our plugin and unittest provide their own collection logic,
# So we can disable the default python collector by giving it empty
# patterns to search for.
# Note that unittest requires that no "Test*" classes exist.
python_classes = []
python_functions = []

# always run in parallel (requires pytest-xdist, see test-requirements.txt)
# and enable strict mode: require all markers
# to be defined and raise on invalid config values
addopts = "-nauto --strict-markers --strict-config"

# treat xpasses as test failures so they get converted to regular tests as soon as possible
xfail_strict = true

[tool.coverage.run]
branch = true
source = ["mypy"]
parallel = true

[tool.coverage.report]
show_missing = true
skip_covered = true
omit = ['mypy/test/*']
exclude_lines = [
  '\#\s*pragma: no cover',
  '^\s*raise AssertionError\b',
  '^\s*raise NotImplementedError\b',
  '^\s*return NotImplemented\b',
  '^\s*raise$',
  '^assert False\b',
  '''^if __name__ == ['"]__main__['"]:$''',
]