Drop support for Python < 3.10, add Python 3.13

Python 3.8 has been EOL since October 2024. Python 3.9 goes EOL next
month (October 2025). Drop support for both.

Signed-off-by: Stephen Finucane <[email protected]>

Author: stephenfin

.github/workflows/ci.yaml

@@ -10,10 +10,10 @@ jobs:
     steps:
       - name: Checkout source code
         uses: actions/checkout@v5
-      - name: Set up Python 3.12
+      - name: Set up Python 3.13
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Install dependencies
         run: python -m pip install tox
       - name: Run tox
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python: ["3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Checkout source code
         uses: actions/checkout@v5
@@ -47,10 +47,10 @@ jobs:
         # We need history for release notes
         with:
           fetch-depth: 0
-      - name: Set up Python 3.12
+      - name: Set up Python 3.13
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Install dependencies
         run: python -m pip install tox
       - name: Build docs (via tox)
@@ -72,10 +72,10 @@ jobs:
         # We need history to build the package
         with:
           fetch-depth: 0
-      - name: Set up Python 3.12
+      - name: Set up Python 3.13
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Install dependencies
         run: python -m pip install build
       - name: Build a binary wheel and a source tarball

pyproject.toml

@@ -10,7 +10,7 @@ authors = [
 ]
 readme = {file = "README.rst", content-type = "text/x-rst"}
 license = {text = "MIT License"}
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 keywords = ["sphinx", "click"]
 classifiers = [
     "Development Status :: 5 - Production/Stable",

releasenotes/notes/drop-python-38-39-0da4002e198b0e4b.yaml

@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    Python 3.8 and Python 3.9 are no longer supported as they have reached
+    end-of-life.
+features:
+  - |
+    Python 3.13 is now officially supported.

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py{38,39,310,311,312}-click{8,8-async},style,docs
+envlist = py{310,311,312,313}-click{8,8-async},style,docs
 
 [testenv]
 setenv =
@@ -40,11 +40,10 @@ commands =
 
 [gh-actions]
 python =
-    3.8: py38
-    3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
+    3.13: py313
 
 [coverage:run]
 branch = True