Update Python version support.

.github/workflows/pre-commit.yml

@@ -0,0 +1,36 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+name: pre-commit
+
+on:
+  pull_request:
+  push:
+    branches:
+    - master
+  # Allow to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  pre-commit:
+    permissions:
+      contents: read
+      pull-requests: write
+    name: linting
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
+      with:
+        python-version: 3.x
+    - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd  #v3.0.1
+      with:
+        extra_args: --all-files --show-diff-on-failure
+      env:
+        PRE_COMMIT_COLOR: always
+    - uses: pre-commit-ci/lite-action@5d6cc0eb514c891a40562a58a8e71576c5c7fb43  #v1.1.0
+      if: always()
+      with:
+        msg: Apply pre-commit code formatting

.github/workflows/tests.yml

@@ -12,6 +12,9 @@ on:
 
 jobs:
   build:
+    permissions:
+      contents: read
+      pull-requests: write
     strategy:
       # We want to see all failures:
       fail-fast: false
@@ -20,47 +23,39 @@ jobs:
         - ["ubuntu", "ubuntu-latest"]
         config:
         # [Python version, tox env]
-        - ["3.11",  "release-check"]
-        - ["3.11",  "lint"]
-        - ["3.8",   "py38"]
-        - ["3.9",   "py39"]
-        - ["3.10",  "py310"]
-        - ["3.11",  "py311"]
-        - ["3.12",  "py312"]
-        - ["3.13",  "py313"]
-        - ["3.11",   "coverage"]
+        - ["3.11", "release-check"]
+        - ["3.9", "py39"]
+        - ["3.10", "py310"]
+        - ["3.11", "py311"]
+        - ["3.12", "py312"]
+        - ["3.13", "py313"]
+        - ["3.11", "coverage"]
 
     runs-on: ${{ matrix.os[1] }}
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     name: ${{ matrix.config[1] }}
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python
-      uses: actions/setup-python@v5
       with:
-        python-version: ${{ matrix.config[0] }}
-    - name: Pip cache
-      uses: actions/cache@v4
+        persist-credentials: false
+    - name: Install uv + caching
+      uses: astral-sh/setup-uv@v5
       with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ matrix.config[0] }}-${{ hashFiles('setup.*', 'tox.ini') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.config[0] }}-
-          ${{ runner.os }}-pip-
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install tox
+        enable-cache: true
+        cache-dependency-glob: |
+          setup.*
+          tox.ini
+        python-version: ${{ matrix.matrix.config[0] }}
+        github-token: ${{ secrets.GITHUB_TOKEN }}
     - name: Test
       if: ${{ !startsWith(runner.os, 'Mac') }}
-      run: tox -e ${{ matrix.config[1] }}
+      run: uvx --with tox-uv tox -e ${{ matrix.config[1] }}
     - name: Test (macOS)
       if: ${{ startsWith(runner.os, 'Mac') }}
-      run: tox -e ${{ matrix.config[1] }}-universal2
+      run: uvx --with tox-uv tox -e ${{ matrix.config[1] }}-universal2
     - name: Coverage
       if: matrix.config[1] == 'coverage'
       run: |
-        pip install coveralls
-        coveralls --service=github
+        uvx coveralls --service=github
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.meta.toml

@@ -2,7 +2,7 @@
 # https://github.com/zopefoundation/meta/tree/master/config/zope-product
 [meta]
 template = "zope-product"
-commit-id = "a6fb3886"
+commit-id = "e1995c20"
 
 [python]
 with-sphinx-doctests = false
@@ -12,9 +12,6 @@ with-macos = false
 with-windows = false
 with-docs = false
 
-[tox]
-use-flake8 = true
-
 [coverage]
 fail-under = 83
 

.pre-commit-config.yaml

@@ -0,0 +1,28 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+minimum_pre_commit_version: '3.6'
+repos:
+  - repo: https://github.com/pycqa/isort
+    rev: "6.0.1"
+    hooks:
+    - id: isort
+  - repo: https://github.com/hhatto/autopep8
+    rev: "v2.3.2"
+    hooks:
+    - id: autopep8
+      args: [--in-place, --aggressive, --aggressive]
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.19.1
+    hooks:
+    - id: pyupgrade
+      args: [--py39-plus]
+  - repo: https://github.com/isidentical/teyit
+    rev: 0.4.3
+    hooks:
+    - id: teyit
+  - repo: https://github.com/PyCQA/flake8
+    rev: "7.1.2"
+    hooks:
+    - id: flake8
+      additional_dependencies:
+        - flake8-debugger == 4.1.2

CHANGES.rst

@@ -4,7 +4,7 @@ CHANGES
 2.1 (unreleased)
 ================
 
-- Nothing changed yet.
+* Drop support for Python 3.8.
 
 
 2.0.0 (2024-11-30)

CONTRIBUTING.md

@@ -1,7 +1,7 @@
 <!--
 Generated from:
 https://github.com/zopefoundation/meta/tree/master/config/zope-product
---> 
+-->
 # Contributing to zopefoundation projects
 
 The projects under the zopefoundation GitHub organization are open source and

MANIFEST.in

@@ -5,6 +5,7 @@ include *.rst
 include *.txt
 include buildout.cfg
 include tox.ini
+include .pre-commit-config.yaml
 
 recursive-include src *.py
 recursive-include src *.rst

pyproject.toml

@@ -0,0 +1,32 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+
+[build-system]
+requires = [
+    "setuptools == 75.8.2",
+    "wheel",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.coverage.run]
+branch = true
+source = ["z3c.relationfield"]
+
+[tool.coverage.report]
+fail_under = 83
+precision = 2
+ignore_errors = true
+show_missing = true
+exclude_lines = [
+    "pragma: no cover",
+    "pragma: nocover",
+    "except ImportError:",
+    "raise NotImplementedError",
+    "if __name__ == '__main__':",
+    "self.fail",
+    "raise AssertionError",
+    "raise unittest.Skip",
+]
+
+[tool.coverage.html]
+directory = "parts/htmlcov"

setup.py

@@ -26,7 +26,6 @@ def read(*rnames):
         'Development Status :: 6 - Mature',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
@@ -37,13 +36,13 @@ def read(*rnames):
     author='Martijn Faassen',
     author_email='[email protected]',
     url='https://github.com/zopefoundation/z3c.relationfield',
-    license='ZPL 2.1',
+    license='ZPL-2.1',
     packages=find_packages('src'),
     package_dir={'': 'src'},
     namespace_packages=['z3c'],
     include_package_data=True,
     zip_safe=False,
-    python_requires='>=3.8',
+    python_requires='>=3.9',
     install_requires=[
         'setuptools',
         'z3c.objpath',

src/z3c/relationfield/tests.py

@@ -21,7 +21,7 @@ class FieldTests(TestCase):
 
     def test_list_value_type(self):
         f = RelationList(title="Test")
-        self.assertTrue(isinstance(f.value_type, Relation))
+        self.assertIsInstance(f.value_type, Relation)
 
 
 class EventTests(TestCase):

tox.ini

@@ -5,7 +5,6 @@ minversion = 3.18
 envlist =
     release-check
     lint
-    py38
     py39
     py310
     py311
@@ -16,22 +15,30 @@ envlist =
 [testenv]
 skip_install = true
 deps =
-    setuptools < 69
-    zc.buildout >= 3.0.1
-    wheel > 0.37
+    setuptools == 75.8.2
+    zc.buildout
+    wheel
 setenv =
-    py312: VIRTUALENV_PIP=23.1.2
-    py312: PIP_REQUIRE_VIRTUALENV=0
 commands_pre =
     {envbindir}/buildout -nc {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} install test
 commands =
     {envbindir}/test {posargs:-cv}
 
+[testenv:setuptools-latest]
+basepython = python3
+deps =
+    git+https://github.com/pypa/setuptools.git\#egg=setuptools
+    zc.buildout
+    wheel
+
+
 [testenv:release-check]
 description = ensure that the distribution is ready to release
 basepython = python3
 skip_install = true
 deps =
+    setuptools == 75.8.2
+    wheel
     twine
     build
     check-manifest
@@ -45,29 +52,14 @@ commands =
     twine check dist/*
 
 [testenv:lint]
+description = This env runs all linters configured in .pre-commit-config.yaml
 basepython = python3
-commands_pre =
-    mkdir -p {toxinidir}/parts/flake8
-allowlist_externals =
-    mkdir
-commands =
-    isort --check-only --diff {toxinidir}/src {toxinidir}/setup.py
-    flake8 {toxinidir}/src {toxinidir}/setup.py
+skip_install = true
 deps =
-    flake8
-    isort
-    # Useful flake8 plugins that are Python and Plone specific:
-    flake8-coding
-    flake8-debugger
-    mccabe
-
-[testenv:isort-apply]
-basepython = python3
+    pre-commit
 commands_pre =
-deps =
-    isort
 commands =
-    isort {toxinidir}/src {toxinidir}/setup.py []
+    pre-commit run --all-files --show-diff-on-failure
 
 [testenv:coverage]
 basepython = python3
@@ -77,29 +69,9 @@ allowlist_externals =
     mkdir
 deps =
     {[testenv]deps}
-    coverage
-    setuptools < 69
+    coverage[toml]
 commands =
     mkdir -p {toxinidir}/parts/htmlcov
     coverage run {envbindir}/test {posargs:-cv}
     coverage html
-    coverage report -m --fail-under=83
-
-[coverage:run]
-branch = True
-source = z3c.relationfield
-
-[coverage:report]
-precision = 2
-ignore_errors = True
-exclude_lines =
-    pragma: no cover
-    pragma: nocover
-    except ImportError:
-    raise NotImplementedError
-    if __name__ == '__main__':
-    self.fail
-    raise AssertionError
-
-[coverage:html]
-directory = parts/htmlcov
+    coverage report