[PEP 771]

.gitignore

@@ -0,0 +1,171 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# UV
+#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#uv.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+# PyPI configuration file
+.pypirc

pyproject.toml

@@ -174,6 +174,7 @@ keywords = "setuptools.dist:Distribution._finalize_setup_keywords"
 eager_resources = "setuptools.dist:assert_string_list"
 namespace_packages = "setuptools.dist:check_nsp"
 extras_require = "setuptools.dist:check_extras"
+default_extras_require = "setuptools.dist:check_default_extras_require"
 install_requires = "setuptools.dist:check_requirements"
 setup_requires = "setuptools.dist:check_requirements"
 python_requires = "setuptools.dist:check_specifier"

setuptools/_core_metadata.py

@@ -28,7 +28,7 @@
 def get_metadata_version(self):
     mv = getattr(self, 'metadata_version', None)
     if mv is None:
-        mv = Version('2.2')
+        mv = Version('2.5')
         self.metadata_version = mv
     return mv
 
@@ -223,6 +223,9 @@ def _write_requirements(self, file):
     for req in _reqs.parse(self.install_requires):
         file.write(f"Requires-Dist: {req}\n")
 
+    for req in _reqs.parse(self.default_extras_require):
+        file.write(f"Default-Extra: {req}\n")
+
     processed_extras = {}
     for augmented_extra, reqs in self.extras_require.items():
         # Historically, setuptools allows "augmented extras": `<extra>:<condition>`
@@ -311,6 +314,7 @@ def _distribution_fullname(name: str, version: str) -> str:
     "project-url": "project_urls",
     "provides": "provides",
     # "provides-dist": "provides_dist",  # NOT USED
+    "default-extra": "default_extras_require",
     "provides-extra": "extras_require",
     "requires": "requires",
     "requires-dist": "install_requires",

setuptools/_importlib.py

@@ -1,6 +1,6 @@
 import sys
 
-if sys.version_info < (3, 10):
+if sys.version_info < (3, 10) or True:
     import importlib_metadata as metadata  # pragma: no cover
 else:
     import importlib.metadata as metadata  # noqa: F401

setuptools/_vendor/importlib_metadata/_adapters.py

@@ -15,6 +15,7 @@ class Message(email.message.Message):
                 'Platform',
                 'Project-URL',
                 'Provides-Dist',
+                'Default-Extra'
                 'Provides-Extra',
                 'Requires-Dist',
                 'Requires-External',

setuptools/_vendor/packaging/metadata.py

@@ -132,6 +132,9 @@ class RawMetadata(TypedDict, total=False):
     license_expression: str
     license_files: list[str]
 
+    # Metadata 2.5 - PEP 771
+    default_extra: list[str]
+
 
 _STRING_FIELDS = {
     "author",
@@ -253,6 +256,7 @@ def _get_payload(msg: email.message.Message, source: bytes | str) -> str:
     "author-email": "author_email",
     "classifier": "classifiers",
     "description": "description",
+    "default-extra": "default_extra",
     "description-content-type": "description_content_type",
     "download-url": "download_url",
     "dynamic": "dynamic",
@@ -463,8 +467,8 @@ def parse_email(data: bytes | str) -> tuple[RawMetadata, dict[str, list[str]]]:
 
 
 # Keep the two values in sync.
-_VALID_METADATA_VERSIONS = ["1.0", "1.1", "1.2", "2.1", "2.2", "2.3", "2.4"]
-_MetadataVersion = Literal["1.0", "1.1", "1.2", "2.1", "2.2", "2.3", "2.4"]
+_VALID_METADATA_VERSIONS = ["1.0", "1.1", "1.2", "2.1", "2.2", "2.3", "2.4", "2.5"]
+_MetadataVersion = Literal["1.0", "1.1", "1.2", "2.1", "2.2", "2.3", "2.4", "2.5"]
 
 _REQUIRED_ATTRS = frozenset(["metadata_version", "name", "version"])
 
@@ -861,3 +865,9 @@ def from_email(cls, data: bytes | str, *, validate: bool = True) -> Metadata:
     """``Provides`` (deprecated)"""
     obsoletes: _Validator[list[str] | None] = _Validator(added="1.1")
     """``Obsoletes`` (deprecated)"""
+    # PEP 771 lets us define a default `extras_require` if none is passed by the
+    # user.
+    default_extra: _Validator[list[utils.NormalizedName] | None] = _Validator(
+        added="2.5",
+    )
+    """:external:ref:`core-metadata-default-extra`"""

setuptools/_vendor/wheel/metadata.py

@@ -142,12 +142,12 @@ def generate_requirements(
 
 def pkginfo_to_metadata(egg_info_path: str, pkginfo_path: str) -> Message:
     """
-    Convert .egg-info directory with PKG-INFO to the Metadata 2.1 format
+    Convert .egg-info directory with PKG-INFO to the Metadata 2.5 format
     """
     with open(pkginfo_path, encoding="utf-8") as headers:
         pkg_info = Parser().parse(headers)
 
-    pkg_info.replace_header("Metadata-Version", "2.1")
+    pkg_info.replace_header("Metadata-Version", "2.5")
     # Those will be regenerated from `requires.txt`.
     del pkg_info["Provides-Extra"]
     del pkg_info["Requires-Dist"]

setuptools/config/_apply_pyprojecttoml.py

@@ -226,6 +226,13 @@ def _dependencies(dist: Distribution, val: list, _root_dir: StrPath | None):
     dist.install_requires = val
 
 
+def _default_optional_dependencies(dist: Distribution, val: dict, _root_dir: StrPath | None):
+    if getattr(dist, "default_extras_require", None):
+        msg = "`default_extras_require` overwritten in `pyproject.toml` (default-optional-dependencies)"
+        SetuptoolsWarning.emit(msg)
+    dist.default_extras_require = val
+
+
 def _optional_dependencies(dist: Distribution, val: dict, _root_dir: StrPath | None):
     if getattr(dist, "extras_require", None):
         msg = "`extras_require` overwritten in `pyproject.toml` (optional-dependencies)"
@@ -396,6 +403,7 @@ def _acessor(obj):
     "urls": _project_urls,
     "dependencies": _dependencies,
     "optional_dependencies": _optional_dependencies,
+    "default_optional_dependencies": _default_optional_dependencies,
     "requires_python": _python_requires,
 }
 
@@ -441,6 +449,7 @@ def _acessor(obj):
     "scripts": _get_previous_scripts,
     "gui-scripts": _get_previous_gui_scripts,
     "dependencies": _attrgetter("install_requires"),
+    "default-optional-dependencies": _attrgetter("default_extras_require"),
     "optional-dependencies": _attrgetter("extras_require"),
 }
 
@@ -458,6 +467,7 @@ def _acessor(obj):
     "scripts": _static.EMPTY_DICT,
     "gui-scripts": _static.EMPTY_DICT,
     "dependencies": _static.EMPTY_LIST,
+    "default-optional-dependencies": _static.EMPTY_LIST,
     "optional-dependencies": _static.EMPTY_DICT,
 }
 

setuptools/config/_validate_pyproject/extra_validations.py

@@ -24,6 +24,13 @@ class RedefiningStaticFieldAsDynamic(ValidationError):
     )
 
 
+class IncludedDependencyGroupMustExist(ValidationError):
+    _DESC = """An included dependency group must exist and must not be cyclic.
+    """
+    __doc__ = _DESC
+    _URL = "https://peps.python.org/pep-0735/"
+
+
 def validate_project_dynamic(pyproject: T) -> T:
     project_table = pyproject.get("project", {})
     dynamic = project_table.get("dynamic", [])
@@ -49,4 +56,27 @@ def validate_project_dynamic(pyproject: T) -> T:
     return pyproject
 
 
-EXTRA_VALIDATIONS = (validate_project_dynamic,)
+def validate_include_depenency(pyproject: T) -> T:
+    dependency_groups = pyproject.get("dependency-groups", {})
+    for key, value in dependency_groups.items():
+        for each in value:
+            if (
+                isinstance(each, dict)
+                and (include_group := each.get("include-group"))
+                and include_group not in dependency_groups
+            ):
+                raise IncludedDependencyGroupMustExist(
+                    message=f"The included dependency group {include_group} doesn't exist",
+                    value=each,
+                    name=f"data.dependency_groups.{key}",
+                    definition={
+                        "description": cleandoc(IncludedDependencyGroupMustExist._DESC),
+                        "see": IncludedDependencyGroupMustExist._URL,
+                    },
+                    rule="PEP 735",
+                )
+    # TODO: check for `include-group` cycles (can be conditional to graphlib)
+    return pyproject
+
+
+EXTRA_VALIDATIONS = (validate_project_dynamic, validate_include_depenency)