Get back onto supported Python versions

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.x'
+        python-version-file: .python-version
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/stage.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.x'
+          python-version-file: .python-version
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
@@ -21,19 +21,12 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
         python -m pip install -r requirements.txt
-        if [ "${{ matrix.python-version }}" != "3.13" ]; then  # workaround for TheKevJames/coveralls-python#523
-          python -m pip install coveralls
-        fi
+        python -m pip install coveralls
         python -m pip freeze
     - name: Test with pytest
       run: |
-        if [ "${{ matrix.python-version }}" == "3.13" ]; then
-          pytest --no-cov  # workaround for TheKevJames/coveralls-python#523
-        else
-          pytest
-        fi
+        pytest
     - name: Upload coverage data
       if: matrix.python-version != '3.13'  # workaround for TheKevJames/coveralls-python#523
       run: |
@@ -45,23 +38,27 @@ jobs:
   coveralls:
     name: Indicate completion to coveralls.io
     needs: test
-    runs-on: ubuntu-latest
-    container: python:3-slim
+    runs-on: ubuntu-slim
     steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version-file: .python-version
     - name: Finished
       run: |
         python -m pip install coveralls
         coveralls --service=github --finish
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   check_packaging:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
-        python-version: '3.x'
+        python-version-file: .python-version
     - name: Verify packaging
       run: |
         python -m pip install build twine

.gitignore

@@ -9,5 +9,6 @@ venv*/
 build
 tests/fixture/package/dist
 dist/
+tox/
 
 README.html

.python-version

@@ -1 +1 @@
-3.9
+3.10

AGENTS.md

@@ -0,0 +1,12 @@
+# Agents
+
+Use these project-specific defaults when making future changes:
+
+- Run tests with `pytest`.
+- Use `tox` to run the full test matrix across supported Python versions.
+- Keep `core-requirements.txt` for runtime dependencies and `extra-test-requirements.txt` for test-only dependencies.
+- Regenerate `requirements.txt` from those inputs with `tox -e compile`. Use `tox -e compile -- --upgrade` to upgrade dependencies to the latest compatible versions.
+- When changing supported Python versions, keep `tox.ini`, GitHub workflows, and `setup.py` trove classifiers in sync.
+- Keep `.python-version` set to the lowest supported Python version so Dependabot and single-version tooling pick it up correctly.
+- Keep `base_python` in the `compile` environment in `tox.ini` set to the lowest supported Python version so that `tox -e compile` works correctly.
+- When changing supported Python versions, recompile the `requirements.txt` file with `tox -e compile -- --upgrade` to ensure that compatible versions of dependencies are used.

CHANGELOG.rst

@@ -1,7 +1,8 @@
 Unreleased
 ----------
 
-- Add official support for Python 3.12 and 3.13.
+- Add official support for Python 3.12, 3.13 and 3.14.
+- Drop support for Python 3.9.
 - Drop support for Python 3.8.
 
 0.7.0

requirements.txt

@@ -1,53 +1,53 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
 #    pip-compile --no-emit-index-url --strip-extras --unsafe-package=pip
 #
-alabaster==0.7.16
+alabaster==1.0.0
     # via sphinx
-anyio==4.9.0
+anyio==4.14.1
     # via httpx
-argon2-cffi==23.1.0
+argon2-cffi==25.1.0
     # via
     #   devpi-server
     #   passlib
-argon2-cffi-bindings==21.2.0
+argon2-cffi-bindings==25.1.0
     # via argon2-cffi
-attrs==25.3.0
+attrs==26.1.0
     # via devpi-server
-babel==2.17.0
+babel==2.18.0
     # via sphinx
-build==1.2.2.post1
+build==1.5.0
     # via
     #   check-manifest
     #   devpi-client
-certifi==2025.1.31
+certifi==2026.6.17
     # via
     #   httpcore
     #   httpx
     #   requests
-cffi==1.17.1
+cffi==2.0.0
     # via argon2-cffi-bindings
-charset-normalizer==3.4.1
+charset-normalizer==3.4.7
     # via requests
-check-manifest==0.50
+check-manifest==0.51
     # via devpi-client
-coverage==7.8.0
+coverage==7.14.3
     # via pytest-cov
 defusedxml==0.7.1
     # via devpi-server
-devpi-client==7.2.0
+devpi-client==7.3.0
     # via -r core-requirements.txt
-devpi-common==4.0.4
+devpi-common==4.1.1
     # via
     #   devpi-client
     #   devpi-server
-devpi-server==6.20.0
+devpi-server==6.20.2
     # via -r extra-test-requirements.txt
 docutils==0.21.2
     # via sphinx
-exceptiongroup==1.2.2
+exceptiongroup==1.3.1
     # via
     #   anyio
     #   pytest
@@ -59,19 +59,14 @@ httpx==0.28.1
     # via devpi-server
 hupper==1.12.1
     # via pyramid
-idna==3.15
+idna==3.18
     # via
     #   anyio
     #   httpx
     #   requests
-imagesize==1.4.1
+imagesize==2.0.0
     # via sphinx
-importlib-metadata==8.6.1
-    # via
-    #   build
-    #   setuptools-scm
-    #   sphinx
-iniconfig==2.1.0
+iniconfig==2.3.0
     # via
     #   devpi-client
     #   pytest
@@ -85,17 +80,18 @@ lazy==1.6
     #   devpi-server
 legacy-cgi==2.6.4
     # via -r extra-test-requirements.txt
-markupsafe==3.0.2
+markupsafe==3.0.3
     # via jinja2
 mock==5.2.0
     # via -r requirements.in
-packaging==25.0
+packaging==26.2
     # via
     #   build
     #   packaging-legacy
     #   pytest
     #   setuptools-scm
     #   sphinx
+    #   vcs-versioning
 packaging-legacy==23.0.post0
     # via devpi-common
 passlib==1.7.4
@@ -110,62 +106,61 @@ plaster==1.1.2
     #   pyramid
 plaster-pastedeploy==1.0.1
     # via pyramid
-platformdirs==4.3.7
+platformdirs==4.10.0
     # via
     #   devpi-client
     #   devpi-server
-pluggy==1.5.0
+pluggy==1.6.0
     # via
     #   devpi-client
     #   devpi-server
     #   pytest
+    #   pytest-cov
 py==1.11.0
     # via devpi-server
-pycparser==2.22
+pycparser==3.0
     # via cffi
 pygments==2.20.0
-    # via sphinx
+    # via
+    #   pytest
+    #   sphinx
 pyproject-hooks==1.2.0
     # via build
-pyramid==2.0.2
+pyramid==2.1
     # via devpi-server
-pytest==8.3.5
+pytest==9.1.1
     # via
     #   -r requirements.in
     #   pytest-cov
-pytest-cov==6.1.1
+pytest-cov==7.1.0
     # via -r requirements.in
 python-dateutil==2.9.0.post0
     # via strictyaml
-repoze-lru==0.7
+repoze-lru==0.8
     # via devpi-server
-requests==2.32.4
+requests==2.34.2
     # via
     #   -r core-requirements.txt
+    #   devpi-client
     #   devpi-common
     #   devpi-server
     #   sphinx
-ruamel-yaml==0.18.10
+ruamel-yaml==0.19.1
     # via devpi-server
-ruamel-yaml-clib==0.2.12
-    # via ruamel-yaml
 setuptools==81.0.0
     # via
     #   check-manifest
     #   devpi-server
     #   pyramid
     #   setuptools-scm
     #   zope-deprecation
-    #   zope-interface
-setuptools-scm==8.3.1
+setuptools-scm==10.2.0
     # via -r requirements.in
 six==1.17.0
     # via python-dateutil
-sniffio==1.3.1
-    # via anyio
-snowballstemmer==2.2.0
+snowballstemmer==3.1.1
     # via sphinx
-sphinx==7.4.7
+sphinx==8.1.3
     # via -r requirements.in
 sphinxcontrib-applehelp==2.0.0
     # via sphinx
@@ -183,7 +178,7 @@ strenum==0.4.15
     # via devpi-server
 strictyaml==1.7.3
     # via devpi-server
-tomli==2.2.1
+tomli==2.4.1
     # via
     #   build
     #   check-manifest
@@ -192,6 +187,7 @@ tomli==2.2.1
     #   pytest
     #   setuptools-scm
     #   sphinx
+    #   vcs-versioning
 translationstring==1.4
     # via pyramid
 twitter-common-contextutil==0.3.11
@@ -200,21 +196,23 @@ twitter-common-dirutil==0.3.11
     # via twitter-common-contextutil
 twitter-common-lang==0.3.11
     # via twitter-common-dirutil
-typing-extensions==4.13.2
+typing-extensions==4.15.0
     # via
     #   anyio
+    #   exceptiongroup
     #   setuptools-scm
-urllib3==2.6.3
+    #   vcs-versioning
+urllib3==2.7.0
     # via requests
+vcs-versioning==2.2.2
+    # via setuptools-scm
 venusian==3.1.1
     # via pyramid
 waitress==3.0.2
     # via devpi-server
 webob==1.8.10
     # via pyramid
-zipp==3.21.0
-    # via importlib-metadata
-zope-deprecation==5.1
+zope-deprecation==6.0
     # via pyramid
-zope-interface==7.2
+zope-interface==8.5
     # via pyramid

setup.py

@@ -22,6 +22,7 @@
     long_description=readme,
     long_description_content_type='text/x-rst',
     license='new BSD',
+    python_requires='>=3.10',
     setup_requires=[
         'setuptools_scm',
     ],
@@ -42,10 +43,10 @@
         'License :: OSI Approved :: BSD License',
         'Topic :: System :: Archiving :: Packaging',
         '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',
     ],
 )

tox.toml

@@ -0,0 +1,14 @@
+min_version = "4.0"
+env_list = ["3.10", "3.11", "3.12", "3.13", "3.14"]
+
+[env_run_base]
+description = "run tests on {base_python}"
+deps = ["-r requirements.txt", "--no-deps"]
+commands = [["pytest", "--no-cov"]]
+
+[env.compile]
+description = "compile dependencies"
+skip_install = true
+deps = ["pip-tools"]
+commands = [["pip-compile", "--no-emit-index-url", "--strip-extras", "--unsafe-package", "pip", { replace = "posargs", extend = true }]]
+base_python = "3.10"