drop python<=3.7 support

.github/workflows/ci.yml

@@ -45,23 +45,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "pypy-3.9", "3.12"]
+        python-version: ["pypy-3.9", "3.12"]
         runs-on: [ubuntu-latest, macos-13]
         cmake-version: ["3.15.x"]
 
         include:
-          - python-version: "3.7"
-            runs-on: windows-2022
-            cmake-version: "3.21.x"
           - python-version: "pypy-3.8"
             runs-on: windows-2022
             cmake-version: "3.21.x"
           - python-version: "3.11"
             runs-on: windows-2022
             cmake-version: "3.26.x"
-          - python-version: "pypy-3.7"
-            runs-on: ubuntu-latest
-            cmake-version: "3.15.x"
           - python-version: "pypy-3.10"
             runs-on: ubuntu-latest
             cmake-version: "3.15.x"

docs/conf.py

@@ -7,17 +7,13 @@
 from __future__ import annotations
 
 import importlib
+import importlib.metadata
 import inspect
 import os
 import sys
 import warnings
 from pathlib import Path
 
-if sys.version_info < (3, 8):
-    import importlib_metadata
-else:
-    import importlib.metadata as importlib_metadata
-
 try:
     import scikit_build_core
 except ModuleNotFoundError:
@@ -32,7 +28,7 @@
     from scikit_build_core import __version__ as version
 except ModuleNotFoundError:
     try:
-        version = importlib_metadata.version("scikit_build_core")
+        version = importlib.metadata.version("scikit_build_core")
     except ModuleNotFoundError:
         msg = (
             "Package should be installed to produce documentation! "

pyproject.toml

@@ -274,20 +274,17 @@ known-local-folder = ["pathutils"]
 "typing.Mapping".msg = "Use collections.abc.Mapping instead."
 "typing.Sequence".msg = "Use collections.abc.Sequence instead."
 "typing.Set".msg = "Use collections.abc.Set instead."
-"typing.Literal".msg = "Use scikit_build_core._compat.typing.Literal instead."
-"typing.Protocol".msg = "Use scikit_build_core._compat.typing.Protocol instead."
 "typing.Self".msg = "Use scikit_build_core._compat.typing.Self instead."
 "typing_extensions.Self".msg = "Use scikit_build_core._compat.typing.Self instead."
-"typing.runtime_checkable".msg = "Add and use scikit_build_core._compat.typing.runtime_checkable instead."
 "typing.Final".msg = "Add scikit_build_core._compat.typing.Final instead."
 "typing.NotRequired".msg = "Add scikit_build_core._compat.typing.NotRequired instead."
 "typing.OrderedDict".msg = "Add scikit_build_core._compat.typing.OrderedDict instead."
 "typing.TypedDict".msg = "Add scikit_build_core._compat.typing.TypedDict instead."
 "typing.assert_never".msg = "Add scikit_build_core._compat.typing.assert_never instead."
 "tomli".msg = "Use scikit_build_core._compat.tomllib instead."
 "tomllib".msg = "Use scikit_build_core._compat.tomllib instead."
-"importlib.metadata".msg = "Use scikit_build_core._compat.importlib.metadata instead."
-"importlib_metadata".msg = "Use scikit_build_core._compat.importlib.metadata instead."
+"importlib_metadata".msg = "Use importlib.metadata directly instead."
+"importlib.metadata.entry_points".msg = "Use scikit_build_core._compat.importlib.metadata.entry_points instead."
 "importlib.resources".msg = "Use scikit_build_core._compat.importlib.resources instead."
 "importlib_resources".msg = "Use scikit_build_core._compat.importlib.resources instead."
 "pyproject_metadata".msg = "Use scikit_build_core._vendor.pyproject_metadata instead."

src/scikit_build_core/_compat/importlib/metadata.py

@@ -1,38 +1,25 @@
 from __future__ import annotations
 
+import importlib.metadata
 import sys
 import typing
 
-if sys.version_info < (3, 8):
-    import importlib_metadata as _metadata
-    from importlib_metadata import PathDistribution, version
-else:
-    import importlib.metadata as _metadata
-    from importlib.metadata import PathDistribution, version
-
-
 if typing.TYPE_CHECKING:
-    if sys.version_info < (3, 8):
-        from importlib_metadata import EntryPoints
-    elif sys.version_info < (3, 10):
+    if sys.version_info < (3, 10):
         from importlib.metadata import EntryPoint
 
         EntryPoints = typing.List[EntryPoint]
     else:
         from importlib.metadata import EntryPoints
 
-__all__ = ["entry_points", "PathDistribution", "version"]
+__all__ = ["entry_points"]
 
 
 def entry_points(*, group: str) -> EntryPoints:
     if sys.version_info >= (3, 10):
-        return _metadata.entry_points(group=group)
-
-    epg = _metadata.entry_points()
-
-    if sys.version_info < (3, 8) and hasattr(epg, "select"):
-        return epg.select(group=group)  # type: ignore[no-any-return, no-untyped-call]
+        return importlib.metadata.entry_points(group=group)
 
+    epg = importlib.metadata.entry_points()
     return epg.get(group, [])
 
 

src/scikit_build_core/_compat/typing.py

@@ -3,14 +3,6 @@
 import sys
 import typing
 
-if sys.version_info < (3, 8):
-    from typing_extensions import (
-        Literal,
-        Protocol,
-    )
-else:
-    from typing import Literal, Protocol
-
 if sys.version_info < (3, 9):
     from typing_extensions import Annotated, get_args, get_origin
 else:
@@ -31,8 +23,6 @@ def assert_never(_: object) -> None:
 
 __all__ = [
     "Annotated",
-    "Literal",
-    "Protocol",
     "Self",
     "assert_never",
     "get_args",

src/scikit_build_core/_logging.py

@@ -5,7 +5,6 @@
 import os
 import re
 import sys
-from typing import Any
 
 __all__ = ["ScikitBuildLogger", "logger", "raw_logger", "rich_print", "LEVEL_VALUE"]
 
@@ -44,37 +43,31 @@
         )
 
 
-if sys.version_info < (3, 8):
-    opts: Any = {}
-else:
-    opts: Any = {"stacklevel": 2}
-
-
 class ScikitBuildLogger:
     # pylint: disable-next=redefined-outer-name
     def __init__(self, logger: logging.Logger) -> None:
         self.logger = logger
 
     def debug(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.debug(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.debug(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def info(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.info(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.info(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def warning(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.warning(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.warning(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def error(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.error(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.error(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def critical(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.critical(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.critical(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def exception(self, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.exception(FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.exception(FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def log(self, level: int, msg: str, *args: object, **kwargs: object) -> None:
-        self.logger.log(level, FStringMessage(msg, *args, **kwargs), **opts)
+        self.logger.log(level, FStringMessage(msg, *args, **kwargs), stacklevel=2)
 
     def setLevel(self, level: int) -> None:  # noqa: N802
         self.logger.setLevel(level)

src/scikit_build_core/build/wheel.py

@@ -7,11 +7,11 @@
 import sysconfig
 import tempfile
 from pathlib import Path
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Literal
 
 from .. import __version__
 from .._compat import tomllib
-from .._compat.typing import Literal, assert_never
+from .._compat.typing import assert_never
 from .._logging import logger, rich_print
 from .._shutil import fix_win_37_all_permissions
 from ..builder.builder import Builder, archs_to_tags, get_archs

src/scikit_build_core/builder/get_requires.py

@@ -5,7 +5,7 @@
 import importlib.util
 import os
 import sysconfig
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Literal
 
 from packaging.tags import sys_tags
 
@@ -24,7 +24,7 @@
 if TYPE_CHECKING:
     from collections.abc import Generator, Mapping
 
-    from .._compat.typing import Literal, Self
+    from .._compat.typing import Self
     from ..settings.skbuild_model import ScikitBuildSettings
 
 __all__ = ["GetRequires"]

src/scikit_build_core/builder/sysconfig.py

@@ -116,13 +116,6 @@ def get_host_platform() -> str:
     Return a string that identifies the current platform. This mimics
     setuptools get_host_platform (without 3.8 aix compat).
     """
-
-    if sys.version_info < (3, 8) and os.name == "nt":
-        if "(arm)" in sys.version.lower():
-            return "win-arm32"
-        if "(arm64)" in sys.version.lower():
-            return "win-arm64"
-
     return sysconfig.get_platform()
 
 
@@ -163,13 +156,7 @@ def get_soabi(env: Mapping[str, str], *, abi3: bool = False) -> str:
     if setuptools_ext_suffix:
         return setuptools_ext_suffix.rsplit(".", 1)[0].lstrip(".")
 
-    if sys.version_info < (3, 8, 7):
-        # See https://github.com/python/cpython/issues/84006
-        import distutils.sysconfig  # pylint: disable=deprecated-module
-
-        ext_suffix = distutils.sysconfig.get_config_var("EXT_SUFFIX")
-    else:
-        ext_suffix = sysconfig.get_config_var("EXT_SUFFIX")
+    ext_suffix = sysconfig.get_config_var("EXT_SUFFIX")
 
     assert isinstance(ext_suffix, str)
     return ext_suffix.rsplit(".", 1)[0].lstrip(".")

src/scikit_build_core/hatch/plugin.py

@@ -3,23 +3,22 @@
 from __future__ import annotations
 
 import copy
+import importlib.metadata
 import os
 import shutil
 import sys
 import sysconfig
 import tempfile
 import typing
 from pathlib import Path
-from typing import Any
+from typing import Any, Literal
 
 from hatchling.builders.hooks.plugin.interface import BuildHookInterface
 from packaging.version import Version
 
 from scikit_build_core.settings.skbuild_model import ScikitBuildSettings
 
 from .. import __version__
-from .._compat.importlib.metadata import version as pkg_version
-from .._compat.typing import Literal
 from .._logging import logger, rich_print
 from ..build._init import setup_logging
 from ..builder.builder import Builder, archs_to_tags, get_archs
@@ -220,7 +219,7 @@
             f"SKBUILD_{k.upper()}_DIR": v for k, v in wheel_dirs.items()
         }
         cache_entries["SKBUILD_STATE"] = state
-        cache_entries["SKBUILD_HATCHLING"] = pkg_version("hatchling")
+        cache_entries["SKBUILD_HATCHLING"] = importlib.metadata.version("hatchling")
         builder.configure(
             defines=defines,
             cache_entries=cache_entries,

src/scikit_build_core/settings/_load_provider.py

@@ -3,9 +3,7 @@
 import importlib
 import sys
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, Union
-
-from .._compat.typing import Protocol
+from typing import TYPE_CHECKING, Any, Protocol, Union
 
 if TYPE_CHECKING:
     from collections.abc import Generator, Iterable, Mapping

src/scikit_build_core/settings/documentation.py

@@ -3,7 +3,6 @@
 import ast
 import dataclasses
 import inspect
-import sys
 import textwrap
 from pathlib import Path
 from typing import TYPE_CHECKING
@@ -24,10 +23,6 @@ def __dir__() -> list[str]:
 
 
 def _get_value(value: ast.expr) -> str:
-    if sys.version_info < (3, 8):
-        assert isinstance(value, ast.Str)
-        return value.s
-
     assert isinstance(value, ast.Constant)
     assert isinstance(value.value, str)
     return value.value

src/scikit_build_core/settings/json_schema.py

@@ -3,13 +3,13 @@
 import dataclasses
 import sys
 from pathlib import Path
-from typing import Any, Union
+from typing import Any, Literal, Union
 
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
 
 from .._compat.builtins import ExceptionGroup
-from .._compat.typing import Annotated, Literal, get_args, get_origin
+from .._compat.typing import Annotated, get_args, get_origin
 from .documentation import pull_docs
 
 __all__ = ["FailedConversionError", "convert_type", "to_json_schema"]

src/scikit_build_core/settings/skbuild_model.py

@@ -1,11 +1,11 @@
 import dataclasses
 from pathlib import Path
-from typing import Any, Dict, List, Optional, Union
+from typing import Any, Dict, List, Literal, Optional, Union
 
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
 
-from .._compat.typing import Annotated, Literal
+from .._compat.typing import Annotated
 
 __all__ = [
     "BackportSettings",

src/scikit_build_core/settings/skbuild_read_settings.py

@@ -8,7 +8,7 @@
 import re
 import sys
 from pathlib import Path
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, Literal
 
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
@@ -23,7 +23,6 @@
 if TYPE_CHECKING:
     from collections.abc import Generator, Mapping
 
-    from .._compat.typing import Literal
 
 __all__ = ["SettingsReader"]
 

src/scikit_build_core/settings/sources.py

@@ -49,10 +49,10 @@
 import dataclasses
 import os
 import typing
-from typing import Any, TypeVar, Union
+from typing import Any, Literal, Protocol, TypeVar, Union
 
 from .._compat.builtins import ExceptionGroup
-from .._compat.typing import Annotated, Literal, Protocol, get_args, get_origin
+from .._compat.typing import Annotated, get_args, get_origin
 
 if typing.TYPE_CHECKING:
     from collections.abc import Generator, Iterator, Mapping, Sequence

src/scikit_build_core/setuptools/build_cmake.py

@@ -3,7 +3,7 @@
 import shutil
 import sys
 from pathlib import Path
-from typing import TYPE_CHECKING, ClassVar
+from typing import TYPE_CHECKING, ClassVar, Literal
 
 import setuptools
 import setuptools.errors
@@ -18,7 +18,6 @@
 if TYPE_CHECKING:
     from setuptools.dist import Distribution
 
-    from .._compat.typing import Literal
     from ..settings.skbuild_model import ScikitBuildSettings
 
 __all__ = [