Add support for 3.14 and drop 3.9 (#216)

Author: gaborbernat

.github/release.yml

@@ -1,5 +1,5 @@
 changelog:
   exclude:
     authors:
-      - dependabot
-      - pre-commit-ci
+      - dependabot[bot]
+      - pre-commit-ci[bot]

.github/workflows/check.yaml

@@ -20,11 +20,11 @@ jobs:
       fail-fast: false
       matrix:
         env:
+          - "3.14"
           - "3.13"
           - "3.12"
           - "3.11"
           - "3.10"
-          - "3.9"
           - type
           - dev
           - pkg_meta
@@ -51,9 +51,9 @@ jobs:
         shell: bash
         run: echo "$USERPROFILE/.local/bin" >> $GITHUB_PATH
       - name: Install tox
-        run: uv tool install --python-preference only-managed --python 3.13 tox --with tox-uv
+        run: uv tool install --python-preference only-managed --python 3.14 tox --with tox-uv
       - name: Install Python
-        if: startsWith(matrix.env, '3.') && matrix.env != '3.13'
+        if: startsWith(matrix.env, '3.') && matrix.env != '3.14'
         run: uv python install --python-preference only-managed ${{ matrix.env }}
       - name: Setup test suite
         run: tox run -vv --notest --skip-missing-interpreters false -e ${{ matrix.env }}

.github/workflows/release.yaml

@@ -20,7 +20,7 @@ jobs:
           cache-dependency-glob: "pyproject.toml"
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Build package
-        run: uv build --python 3.13 --python-preference only-managed --sdist --wheel . --out-dir dist
+        run: uv build --python 3.14 --python-preference only-managed --sdist --wheel . --out-dir dist
       - name: Store the distribution packages
         uses: actions/upload-artifact@v4
         with:

.pre-commit-config.yaml

@@ -13,18 +13,18 @@ repos:
     rev: v2.4.1
     hooks:
       - id: codespell
-        additional_dependencies: ["tomli>=2.2.1"]
+        additional_dependencies: ["tomli>=2.3"]
   - repo: https://github.com/tox-dev/tox-ini-fmt
     rev: "1.6.0"
     hooks:
       - id: tox-ini-fmt
         args: ["-p", "fix"]
   - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: "v2.7.0"
+    rev: "v2.10.0"
     hooks:
       - id: pyproject-fmt
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.13.3"
+    rev: "v0.14.0"
     hooks:
       - id: ruff-format
       - id: ruff

pyproject.toml

@@ -23,7 +23,7 @@ maintainers = [
 authors = [
   { name = "Bernát Gábor", email = "[email protected]" },
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Framework :: tox",
@@ -33,11 +33,11 @@ classifiers = [
   "Operating System :: Microsoft :: Windows",
   "Operating System :: POSIX",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Topic :: Software Development :: Libraries",
   "Topic :: Software Development :: Testing",
   "Topic :: Utilities",
@@ -47,17 +47,17 @@ dynamic = [
 ]
 dependencies = [
   "packaging>=25",
-  "tomli>=2.2.1; python_version<'3.11'",
+  "tomli>=2.3; python_version<'3.11'",
 ]
 optional-dependencies.docs = [
-  "furo>=2025.7.19",
-  "sphinx-autodoc-typehints>=3.2",
+  "furo>=2025.9.25",
+  "sphinx-autodoc-typehints>=3.5.1",
 ]
 optional-dependencies.testing = [
   "covdefaults>=2.3",
   "pytest>=8.4.2",
   "pytest-cov>=7",
-  "pytest-mock>=3.15",
+  "pytest-mock>=3.15.1",
   "setuptools>=80.9",
 ]
 urls.Changelog = "https://github.com/tox-dev/pyproject-api/releases"
@@ -121,9 +121,6 @@ builtin = "clear,usage,en-GB_to_en-US"
 write-changes = true
 count = true
 
-[tool.pyproject-fmt]
-max_supported_python = "3.13"
-
 [tool.coverage]
 html.show_contexts = true
 html.skip_covered = false

src/pyproject_api/_frontend.py

@@ -9,7 +9,7 @@
 from pathlib import Path
 from tempfile import NamedTemporaryFile, TemporaryDirectory
 from time import sleep
-from typing import TYPE_CHECKING, Any, Literal, NamedTuple, NoReturn, Optional, TypedDict, cast
+from typing import TYPE_CHECKING, Any, Literal, NamedTuple, NoReturn, TypedDict, cast
 from zipfile import ZipFile
 
 from packaging.requirements import Requirement
@@ -25,7 +25,7 @@
     import tomli as tomllib
 
 _HERE = Path(__file__).parent
-ConfigSettings = Optional[dict[str, Any]]
+ConfigSettings = dict[str, Any] | None
 
 
 class OptionalHooks(TypedDict, total=True):

tests/test_frontend.py

@@ -2,14 +2,17 @@
 
 from pathlib import Path
 from textwrap import dedent
-from typing import Callable, Literal
+from typing import TYPE_CHECKING, Literal
 
 import pytest
 from packaging.requirements import Requirement
 
 from pyproject_api._frontend import BackendFailed
 from pyproject_api._via_fresh_subprocess import SubprocessFrontend
 
+if TYPE_CHECKING:
+    from collections.abc import Callable
+
 
 @pytest.fixture
 def local_builder(tmp_path: Path) -> Callable[[str], Path]:
@@ -55,7 +58,7 @@ def test_empty_pyproject(tmp_path: Path) -> None:
     assert backend_paths == ()
     assert backend_module == "setuptools.build_meta"
     assert backend_obj == "__legacy__"
-    for left, right in zip(requires, (Requirement("setuptools>=40.8.0"), Requirement("wheel"))):
+    for left, right in zip(requires, (Requirement("setuptools>=40.8.0"), Requirement("wheel")), strict=False):
         assert isinstance(left, Requirement)
         assert str(left) == str(right)
 
@@ -98,7 +101,7 @@ def get_requires_for_build_sdist(self, config_settings=None):
     (build / "api.py").write_text(dedent(api))
     frontend = SubprocessFrontend(*SubprocessFrontend.create_args_from_folder(tmp_path)[:-1])
     result = frontend.get_requires_for_build_sdist()
-    for left, right in zip(result.requires, (Requirement("a"),)):
+    for left, right in zip(result.requires, (Requirement("a"),), strict=False):
         assert isinstance(left, Requirement)
         assert str(left) == str(right)
 

tox.ini

@@ -1,14 +1,14 @@
 [tox]
 requires =
-    tox>=4.30.2
-    tox-uv>=1.28
+    tox>=4.31
+    tox-uv>=1.28.1
 env_list =
     fix
+    3.14
     3.13
     3.12
     3.11
     3.10
-    3.9
     docs
     type
     pkg_meta
@@ -57,7 +57,7 @@ commands =
 [testenv:type]
 description = run type check on code base
 deps =
-    mypy==1.17.1
+    mypy==1.18.2
 set_env =
     {tty:MYPY_FORCE_COLOR = 1}
 commands =
@@ -70,7 +70,7 @@ skip_install = true
 deps =
     check-wheel-contents>=0.6.3
     twine>=6.2
-    uv>=0.8.16
+    uv>=0.9
 commands =
     uv build --sdist --wheel --out-dir {env_tmp_dir} .
     twine check {env_tmp_dir}{/}*