Add support for Python 3.14, upgrade dependencies and CI actions, upgrade macOS support to 14.0+, add free-threaded CPython

.coveragerc

@@ -1,3 +1,4 @@
 [run]
+core = ctrace
 plugins = Cython.Coverage
 source = libzim

.github/workflows/CI-wheels.yaml

@@ -19,10 +19,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13, windows-2022, ubuntu-24.04]
+        os: [macos-14, windows-2022, ubuntu-24.04]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up QEMU
         if: runner.os == 'Linux'
@@ -31,9 +31,9 @@ jobs:
           platforms: all
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.22
+        uses: pypa/cibuildwheel@v3.2
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           name: wheels-${{ matrix.os }}
           path: ./wheelhouse/*.whl
@@ -42,12 +42,12 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Build sdist
         run: pipx run build --sdist
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           name: sdist
           path: dist/*.tar.gz

.github/workflows/Publish.yaml

@@ -22,10 +22,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-24.04, macos-13, windows-2022]
+        os: [ubuntu-24.04, macos-14, windows-2022]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up QEMU
         if: runner.os == 'Linux'
@@ -34,7 +34,7 @@ jobs:
           platforms: all
 
       - name: Prepare Apple Keychain for Signing
-        if: matrix.os == 'macos-13'
+        if: matrix.os == 'macos-14'
         shell: bash
         run: |
           # store certificate on filesystem
@@ -68,17 +68,17 @@ jobs:
           security unlock-keychain -p mysecretpassword ${APPLE_SIGNING_KEYCHAIN_PATH}
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.22
+        uses: pypa/cibuildwheel@v3.2
 
       - name: Cleanup Apple Keychain
-        if: matrix.os == 'macos-13'
+        if: matrix.os == 'macos-14'
         shell: bash
         run: |
           security lock-keychain ${APPLE_SIGNING_KEYCHAIN_PATH}
           security delete-keychain ${APPLE_SIGNING_KEYCHAIN_PATH}
           rm -f ${APPLE_SIGNING_KEYCHAIN_PATH}
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           name: wheels-${{ matrix.os }}
           path: ./wheelhouse/*.whl
@@ -87,12 +87,12 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Build sdist
         run: pipx run build --sdist
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           name: sdist
           path: dist/*.tar.gz
@@ -103,24 +103,24 @@ jobs:
     environment: release
     steps:
       # retrieve all artifacts
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v6
         with:
           name: sdist
           path: dist
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v6
         with:
           name: wheels-ubuntu-24.04
           path: dist
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v6
         with:
-          name: wheels-macos-13
+          name: wheels-macos-14
           path: dist
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v6
         with:
           name: wheels-windows-2022
           path: dist
 
-      - uses: pypa/gh-action-pypi-publish@v1.9.0
+      - uses: pypa/gh-action-pypi-publish@v1.13.0
         with:
           user: __token__
           # password: ${{ secrets.PYPI_TEST_API_TOKEN }}

.github/workflows/QA.yaml

@@ -9,12 +9,12 @@ jobs:
   lint:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
           architecture: x64
 
       - name: Install dependencies (and project)

.github/workflows/Tests.yaml

@@ -12,34 +12,35 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13, windows-2022, ubuntu-24.04]
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        os: [macos-14, macos-15, macos-15-intel, windows-2022, windows-2025, ubuntu-22.04, ubuntu-24.04]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.13t", "3.14", "3.14t"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python ${{ matrix.python }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
-          architecture: x64
 
+      - name: Display Python version
+        run: python -VV
 
       - name: Install dependencies (and project)
         run: |
           pip install -U pip
           pip install -e .[test,scripts]
 
       - name: move DLLs next to wrapper
-        if: matrix.os == 'windows-2022'
+        if: startsWith(matrix.os, 'windows-')
         run: Move-Item -Force -Path .\libzim\*.dll -Destination .\
 
       - name: Run the tests
         run: inv coverage --args "-vvv"
 
       - name: Upload coverage report to codecov
-        if: matrix.os == 'ubuntu-24.04' && matrix.python == '3.13'
-        uses: codecov/codecov-action@v4
+        if: matrix.os == 'ubuntu-24.04' && matrix.python == '3.14'
+        uses: codecov/codecov-action@v5
         with:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Maintenance upgrades (#237):
+  - Drop support of Python 3.9
+  - Add support for Python 3.14
+  - Upgrade dependencies, especially Cython 3.1.6
+  - Upgrade supported macOS to 14.0+ (instead of 13.0+)
+  - Add support for free-threaded CPython (3.13 and 3.14)
+  - Upgrade Github CI Actions
+  - Run tests on minimum supported platforms + more recent stable ones
+
 ## [3.7.0] - 2025-04-18
 
 ### Added

README.md

@@ -29,6 +29,8 @@ Our [PyPI wheels](https://pypi.org/project/libzim/) bundle a [recent release](ht
 
 Wheels are available for CPython only (but can be built for Pypy).
 
+Free-threaded CPython is not supported. If you use a free-threaded CPython, GIL must be turned on (using the environment variable PYTHON_GIL or the command-line option -X gil). If you don't turn it on yourself, GIL will be forced-on and you will get a warning. Only few methods support the GIL to be disabled.
+
 Users on other platforms can install the source distribution (see [Building](#Building) below). 
 
 

libzim/writer.pyi

@@ -23,9 +23,9 @@ class Blob:
 class ContentProvider:
     def feed(self) -> Blob: ...
     def get_size(self) -> int: ...
-    def gen_blob(self) -> Generator[Blob, None, None]: ...
+    def gen_blob(self) -> Generator[Blob]: ...
 
-    generator: Generator[Blob, None, None]
+    generator: Generator[Blob]
 
 class StringProvider(ContentProvider):
     def __init__(self, content: str | bytes) -> None: ...

pyproject.toml

@@ -1,17 +1,17 @@
 [build-system]
 requires = [
-  "setuptools == 74.1.1",
-  "wheel == 0.44.0",
-  "cython == 3.0.11",
+  "setuptools == 80.9.0",
+  "wheel == 0.45.1",
+  "cython == 3.1.6",
   # https://github.com/pypa/cibuildwheel/blob/v2.22/cibuildwheel/resources/constraints.txt
-  "delocate == 0.12.0 ; platform_system=='Windows'",
+  "delocate == 0.13.0 ; platform_system=='Windows'",
 ]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "libzim"
 version = "3.7.1-dev0"
-requires-python = ">=3.9,<3.14"
+requires-python = ">=3.10,<3.15"
 description = "A python-facing API for creating and interacting with ZIM files"
 authors = [
     {name = "openZIM", email = "[email protected]"},
@@ -30,11 +30,11 @@ classifiers = [
     "Intended Audience :: Developers",
     "Programming Language :: Cython",
     "Programming Language :: Python :: 3",
-    "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",
     "Typing :: Stubs Only",
     "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
     "Operating System :: MacOS",
@@ -50,43 +50,43 @@ scripts = [
   "invoke==2.2.0",
 ]
 lint = [
-  "black==25.1.0",
-  "ruff==0.9.5",
+  "black==25.9.0",
+  "ruff==0.14.3",
   "libzim",
   "libzim[build]",
 ]
 check = [
-  "pyright==1.1.393",
+  "pyright==1.1.407",
   "libzim",
   "libzim[build]",
   "libzim[test]",
   "types-setuptools",
 ]
 test = [
-  "pytest==8.3.4",
-  "coverage==7.6.10",
+  "pytest==8.4.2",
+  "coverage==7.11.0",
   # for cython coverage plugin
   "libzim[build]",
 ]
 build = [
-  "setuptools == 75.8.0",
+  "setuptools == 80.9.0",
   "wheel == 0.45.1",
-  "cython == 3.0.11",
-  "delocate == 0.12.0 ; platform_system=='Windows'",
+  "cython == 3.1.6",
+  "delocate == 0.13.0 ; platform_system=='Windows'",
 ]
 docs = [
   "mkdocs==1.6.1",
-  "mkdocstrings-python==1.14.5",
-  "mkdocs-material==9.5.49",
-  "pymdown-extensions==10.14",
+  "mkdocstrings-python==1.18.2",
+  "mkdocs-material==9.6.23",
+  "pymdown-extensions==10.16.1",
   "mkdocs-gen-files==0.5.0",
-  "mkdocs-literate-nav==0.6.1",
-  "mkdocs-include-markdown-plugin==7.1.2",
-  "griffe==1.5.6",
+  "mkdocs-literate-nav==0.6.2",
+  "mkdocs-include-markdown-plugin==7.2.0",
+  "griffe==1.14.0",
 ]
 dev = [
-  "pre-commit==4.1.0",
-  "ipython==8.32.0",
+  "pre-commit==4.3.0",
+  "ipython==9.6.0",
   "types-setuptools",
   "libzim[scripts]",
   "libzim[lint]",
@@ -123,6 +123,11 @@ skip = "pp* *win32*"
 test-requires = ["pytest"]
 test-command = "py.test {project}/tests/"
 
+# Override test command for free-threaded builds to force GIL on
+[[tool.cibuildwheel.overrides]]
+select = "cp313t-* cp314t-*"
+test-command = "python -X gil=1 -m pytest {project}/tests/"
+
 manylinux-x86_64-image = "manylinux_2_28"
 manylinux-aarch64-image = "manylinux_2_28"
 manylinux-pypy_x86_64-image = "manylinux_2_28"
@@ -137,12 +142,10 @@ archs = ["x86_64", "aarch64"]
 
 [tool.cibuildwheel.macos]
 archs = ["x86_64", "arm64"]
-# macOS arm64 is cross-compiled and can not be tested.
-# cibuildwheel skips it already. *_arm64 this removes the warning
-# skipping tests on cp <=3.9 as the wheels we produce are on unexpected combinations
-# because those python versions were released before our building host version
+# macOS x86_64 is cross-compiled and can not be tested.
+# cibuildwheel skips it already. *_x86_64 this removes the warning
 # > requires changing wheel names
-test-skip = "*_arm64 cp39*"
+test-skip = "*_x86_64"
 
 [tool.hatch.build]
 exclude = [
@@ -168,7 +171,7 @@ features = ["scripts", "test"]
 PROFILE = "1"
 
 [[tool.hatch.envs.test.matrix]]
-python = ["3.9", "3.10", "3.11", "3.12", "3.13"]
+python = ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
 [tool.hatch.envs.test.scripts]
 run = "inv test --args '{args}'"
@@ -206,10 +209,10 @@ all = "inv checkall --args '{args}'"
 
 [tool.black]
 line-length = 88
-target-version = ['py312']
+target-version = ['py314']
 
 [tool.ruff]
-target-version = "py312"
+target-version = "py314"
 line-length = 88
 src = ["src"]
 
@@ -336,6 +339,6 @@ exclude_lines = [
 [tool.pyright]
 include = ["libzim", "tests", "tasks.py"]
 exclude = [".env/**", ".venv/**"]
-pythonVersion = "3.13"
+pythonVersion = "3.14"
 typeCheckingMode="basic"
 disableBytesTypePromotions = true