pypa · layday · Nov 20, 2022 · Nov 13, 2022 · Nov 13, 2022 · Nov 13, 2022
@@ -18,10 +18,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Setup Python 3.9
+      - name: Setup Python 3.10
         uses: actions/setup-python@v4
         with:
-          python-version: 3.9
+          python-version: "3.10"
 
       - name: Install tox
         run: python -m pip install tox

@@ -41,7 +41,6 @@ jobs:
           - "3.9"
           - "3.8"
           - "3.7"
-          - "3.6"
         tox-target:
           - "tox"
           - "min"

@@ -21,7 +21,7 @@ repos:
     rev: v3.1.0
     hooks:
       - id: pyupgrade
-        args: ["--py36-plus"]
+        args: ["--py37-plus"]
   - repo: https://github.com/psf/black
     rev: 22.10.0
     hooks:

@@ -8,8 +8,10 @@ Unreleased
 
 - Change build backend from ``setuptools`` to ``flit``
   (`PR #470`_, Fixes `#394`_)
+- Dropped support for Python 3.6 (`PR #532`_)
 
 .. _PR #470: https://github.com/pypa/build/pull/470
+.. _PR #532: https://github.com/pypa/build/pull/532
 .. _#394: https://github.com/pypa/build/issues/394
 
 

@@ -65,3 +65,8 @@
 # html_static_path = ['_static']
 
 autoclass_content = 'both'
+
+nitpick_ignore = [
+    # https://github.com/python/importlib_metadata/issues/316
+    ('py:class', 'importlib.metadata._meta.PackageMetadata'),
+]
@@ -47,13 +47,11 @@ Compatibility
 ``build`` is verified to be compatible with the following Python
 versions:
 
-- 2.7
-- 3.5
-- 3.6
 - 3.7
 - 3.8
 - 3.9
-- PyPy(2)
+- 3.10
+- 3.11
 - PyPy3
 
 

@@ -7,7 +7,7 @@ name = "build"
 version = "0.9.0"
 description = "A simple, correct PEP 517 build frontend"
 readme = "README.md"
-requires-python = ">= 3.6"
+requires-python = ">= 3.7"
 license.file = "LICENSE"
 authors = [
   { name = "Filipe Laíns", email = "[email protected]" },
@@ -19,7 +19,6 @@ classifiers = [
   "License :: OSI Approved :: MIT License",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.6",
   "Programming Language :: Python :: 3.7",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
@@ -117,7 +116,7 @@ filterwarnings = [
 
 [tool.mypy]
 files = "src"
-python_version = "3.6"
+python_version = "3.7"
 strict = true
 show_error_codes = true
 enable_error_code = ["ignore-without-code", "truthy-bool", "redundant-expr"]
@@ -133,7 +132,7 @@ ignore_missing_imports = true
 [tool.black]
 line-length = 127
 skip-string-normalization = true
-target-version = ["py39", "py38", "py37", "py36"]
+target-version = ["py311", "py310", "py39", "py38", "py37"]
 
 [tool.isort]
 profile = "black"

@@ -4,6 +4,9 @@
 build - A simple, correct PEP 517 build frontend
 """
 
+from __future__ import annotations
+
+
 __version__ = '0.9.0'
 
 import contextlib
@@ -19,27 +22,13 @@
 import zipfile
 
 from collections import OrderedDict
-from typing import (
-    AbstractSet,
-    Any,
-    Callable,
-    Dict,
-    Iterator,
-    List,
-    Mapping,
-    MutableMapping,
-    Optional,
-    Sequence,
-    Set,
-    Tuple,
-    Type,
-    Union,
-)
+from collections.abc import Iterator, Set
+from typing import Any, Callable, Mapping, MutableMapping, Optional, Sequence, Tuple, Type, Union
 
 import pep517.wrappers
 
 
-TOMLDecodeError: Type[Exception]
+TOMLDecodeError: type[Exception]
 toml_loads: Callable[[str], MutableMapping[str, Any]]
 
 if sys.version_info >= (3, 11):
@@ -88,7 +77,7 @@ class BuildBackendException(Exception):
     """
 
     def __init__(
-        self, exception: Exception, description: Optional[str] = None, exc_info: _ExcInfoType = (None, None, None)
+        self, exception: Exception, description: str | None = None, exc_info: _ExcInfoType = (None, None, None)
     ) -> None:
         super().__init__()
         self.exception = exception
@@ -159,8 +148,8 @@ def _validate_source_directory(srcdir: PathType) -> None:
 
 
 def check_dependency(
-    req_string: str, ancestral_req_strings: Tuple[str, ...] = (), parent_extras: AbstractSet[str] = frozenset()
-) -> Iterator[Tuple[str, ...]]:
+    req_string: str, ancestral_req_strings: tuple[str, ...] = (), parent_extras: Set[str] = frozenset()
+) -> Iterator[tuple[str, ...]]:
     """
     Verify that a dependency and all of its dependencies are met.
 
@@ -217,7 +206,7 @@ def _find_typo(dictionary: Mapping[str, str], expected: str) -> None:
             )
 
 
-def _parse_build_system_table(pyproject_toml: Mapping[str, Any]) -> Dict[str, Any]:
+def _parse_build_system_table(pyproject_toml: Mapping[str, Any]) -> dict[str, Any]:
     # If pyproject.toml is missing (per PEP 517) or [build-system] is missing
     # (per PEP 518), use default values
     if 'build-system' not in pyproject_toml:
@@ -265,7 +254,7 @@ def __init__(
         self,
         srcdir: PathType,
         python_executable: str = sys.executable,
-        scripts_dir: Optional[str] = None,
+        scripts_dir: str | None = None,
         runner: RunnerType = pep517.wrappers.default_subprocess_runner,
     ) -> None:
         """
@@ -313,12 +302,10 @@ def __init__(
             runner=self._runner,
         )
 
-    def _runner(
-        self, cmd: Sequence[str], cwd: Optional[str] = None, extra_environ: Optional[Mapping[str, str]] = None
-    ) -> None:
+    def _runner(self, cmd: Sequence[str], cwd: str | None = None, extra_environ: Mapping[str, str] | None = None) -> None:
         # if script dir is specified must be inserted at the start of PATH (avoid duplicate path while doing so)
         if self.scripts_dir is not None:
-            paths: Dict[str, None] = OrderedDict()
+            paths: dict[str, None] = OrderedDict()
             paths[str(self.scripts_dir)] = None
             if 'PATH' in os.environ:
                 paths.update((i, None) for i in os.environ['PATH'].split(os.pathsep))
@@ -345,26 +332,26 @@ def python_executable(self, value: str) -> None:
         self._hook.python_executable = value
 
     @property
-    def scripts_dir(self) -> Optional[str]:
+    def scripts_dir(self) -> str | None:
         """
         The folder where the scripts are stored for the python executable.
         """
         return self._scripts_dir
 
     @scripts_dir.setter
-    def scripts_dir(self, value: Optional[str]) -> None:
+    def scripts_dir(self, value: str | None) -> None:
         self._scripts_dir = value
 
     @property
-    def build_system_requires(self) -> Set[str]:
+    def build_system_requires(self) -> set[str]:
         """
         The dependencies defined in the ``pyproject.toml``'s
         ``build-system.requires`` field or the default build dependencies
         if ``pyproject.toml`` is missing or ``build-system`` is undefined.
         """
         return set(self._build_system['requires'])
 
-    def get_requires_for_build(self, distribution: str, config_settings: Optional[ConfigSettingsType] = None) -> Set[str]:
+    def get_requires_for_build(self, distribution: str, config_settings: ConfigSettingsType | None = None) -> set[str]:
         """
         Return the dependencies defined by the backend in addition to
         :attr:`build_system_requires` for a given distribution.
@@ -380,9 +367,7 @@ def get_requires_for_build(self, distribution: str, config_settings: Optional[Co
         with self._handle_backend(hook_name):
             return set(get_requires(config_settings))
 
-    def check_dependencies(
-        self, distribution: str, config_settings: Optional[ConfigSettingsType] = None
-    ) -> Set[Tuple[str, ...]]:
+    def check_dependencies(self, distribution: str, config_settings: ConfigSettingsType | None = None) -> set[tuple[str, ...]]:
         """
         Return the dependencies which are not satisfied from the combined set of
         :attr:`build_system_requires` and :meth:`get_requires_for_build` for a given
@@ -396,8 +381,8 @@ def check_dependencies(
         return {u for d in dependencies for u in check_dependency(d)}
 
     def prepare(
-        self, distribution: str, output_directory: PathType, config_settings: Optional[ConfigSettingsType] = None
-    ) -> Optional[str]:
+        self, distribution: str, output_directory: PathType, config_settings: ConfigSettingsType | None = None
+    ) -> str | None:
         """
         Prepare metadata for a distribution.
 
@@ -423,8 +408,8 @@ def build(
         self,
         distribution: str,
         output_directory: PathType,
-        config_settings: Optional[ConfigSettingsType] = None,
-        metadata_directory: Optional[str] = None,
+        config_settings: ConfigSettingsType | None = None,
+        metadata_directory: str | None = None,
     ) -> str:
         """
         Build a distribution.
@@ -470,7 +455,7 @@ def metadata_path(self, output_directory: PathType) -> str:
         return os.path.join(output_directory, distinfo)
 
     def _call_backend(
-        self, hook_name: str, outdir: PathType, config_settings: Optional[ConfigSettingsType] = None, **kwargs: Any
+        self, hook_name: str, outdir: PathType, config_settings: ConfigSettingsType | None = None, **kwargs: Any
     ) -> str:
         outdir = os.path.abspath(outdir)
 
@@ -535,5 +520,5 @@ def log(message: str) -> None:
 ]
 
 
-def __dir__() -> List[str]:
+def __dir__() -> list[str]:
     return __all__
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: MIT
 
+from __future__ import annotations
 
 import argparse
 import contextlib
@@ -14,7 +15,8 @@
 import traceback
 import warnings
 
-from typing import Dict, Iterator, List, NoReturn, Optional, Sequence, TextIO, Type, Union
+from collections.abc import Iterator, Sequence
+from typing import NoReturn, TextIO
 
 import build
 
@@ -34,7 +36,7 @@
 _NO_COLORS = {color: '' for color in _COLORS}
 
 
-def _init_colors() -> Dict[str, str]:
+def _init_colors() -> dict[str, str]:
     if 'NO_COLOR' in os.environ:
         if 'FORCE_COLOR' in os.environ:
             warnings.warn('Both NO_COLOR and FORCE_COLOR environment variables are set, disabling color')
@@ -52,12 +54,12 @@ def _cprint(fmt: str = '', msg: str = '') -> None:
 
 
 def _showwarning(
-    message: Union[Warning, str],
-    category: Type[Warning],
+    message: Warning | str,
+    category: type[Warning],
     filename: str,
     lineno: int,
-    file: Optional[TextIO] = None,
-    line: Optional[str] = None,
+    file: TextIO | None = None,
+    line: str | None = None,
 ) -> None:  # pragma: no cover
     _cprint('{yellow}WARNING{reset} {}', str(message))
 
@@ -102,7 +104,7 @@ def _format_dep_chain(dep_chain: Sequence[str]) -> str:
 
 
 def _build_in_isolated_env(
-    builder: ProjectBuilder, outdir: PathType, distribution: str, config_settings: Optional[ConfigSettingsType]
+    builder: ProjectBuilder, outdir: PathType, distribution: str, config_settings: ConfigSettingsType | None
 ) -> str:
     with _IsolatedEnvBuilder() as env:
         builder.python_executable = env.executable
@@ -118,7 +120,7 @@ def _build_in_current_env(
     builder: ProjectBuilder,
     outdir: PathType,
     distribution: str,
-    config_settings: Optional[ConfigSettingsType],
+    config_settings: ConfigSettingsType | None,
     skip_dependency_check: bool = False,
 ) -> str:
     if not skip_dependency_check:
@@ -136,7 +138,7 @@ def _build(
     builder: ProjectBuilder,
     outdir: PathType,
     distribution: str,
-    config_settings: Optional[ConfigSettingsType],
+    config_settings: ConfigSettingsType | None,
     skip_dependency_check: bool,
 ) -> str:
     if isolation:
@@ -186,7 +188,7 @@ def build_package(
     srcdir: PathType,
     outdir: PathType,
     distributions: Sequence[str],
-    config_settings: Optional[ConfigSettingsType] = None,
+    config_settings: ConfigSettingsType | None = None,
     isolation: bool = True,
     skip_dependency_check: bool = False,
 ) -> Sequence[str]:
@@ -200,7 +202,7 @@ def build_package(
     :param isolation: Isolate the build in a separate environment
     :param skip_dependency_check: Do not perform the dependency check
     """
-    built: List[str] = []
+    built: list[str] = []
     builder = _ProjectBuilder(srcdir)
     for distribution in distributions:
         out = _build(isolation, builder, outdir, distribution, config_settings, skip_dependency_check)
@@ -212,7 +214,7 @@ def build_package_via_sdist(
     srcdir: PathType,
     outdir: PathType,
     distributions: Sequence[str],
-    config_settings: Optional[ConfigSettingsType] = None,
+    config_settings: ConfigSettingsType | None = None,
     isolation: bool = True,
     skip_dependency_check: bool = False,
 ) -> Sequence[str]:
@@ -234,7 +236,7 @@ def build_package_via_sdist(
 
     sdist_name = os.path.basename(sdist)
     sdist_out = tempfile.mkdtemp(prefix='build-via-sdist-')
-    built: List[str] = []
+    built: list[str] = []
     # extract sdist
     with tarfile.open(sdist) as t:
         t.extractall(sdist_out)
@@ -328,7 +330,7 @@ def main_parser() -> argparse.ArgumentParser:
     return parser
 
 
-def main(cli_args: Sequence[str], prog: Optional[str] = None) -> None:  # noqa: C901
+def main(cli_args: Sequence[str], prog: str | None = None) -> None:  # noqa: C901
     """
     Parse the CLI arguments and invoke the build process.
-Original file line number
+Diff line change
@@ Expand Up / @@ -41,7 +41,6 @@ jobs: @@
               - "3.9"
               - "3.8"
               - "3.7"
-              - "3.6"
             tox-target:
               - "tox"
               - "min"
@@ Expand Down @@