Update CI configuration to reflect new platforms.

.github/workflows/ci.yml

@@ -64,21 +64,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [ "macos-12", "macos-14", "windows-latest", "ubuntu-latest" ]
-        python-version: [ "3.9", "3.12", "3.13-dev" ]
+        platform: [ "macos-12", "macos-latest", "windows-latest", "ubuntu-latest" ]
+        python-version: [ "3.9", "3.13", "3.14" ]
         include:
           - experimental: false
-          - platform: "ubuntu-latest"
-            python-version: "3.9"
-            experimental: false
+          # Ensure the Python versions between min and max are tested
           - platform: "ubuntu-latest"
             python-version: "3.10"
-            experimental: false
           - platform: "ubuntu-latest"
             python-version: "3.11"
-            experimental: false
+          - platform: "ubuntu-latest"
+            python-version: "3.12"
           # Allow dev Python to fail without failing entire job
-          - python-version: "3.13-dev"
+          - python-version: "3.14"
             experimental: true
     steps:
     - name: Checkout
@@ -90,6 +88,7 @@ jobs:
       uses: actions/[email protected]
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
 
     - name: Get Packages
       uses: actions/[email protected]
@@ -185,23 +184,27 @@ jobs:
       fail-fast: false
       matrix:
         framework: [ "toga", "pyside6", "pygame", "console" ]
-        runner-os: [ "macos-12", "macos-14", "ubuntu-22.04", "windows-latest" ]
+        runner-os: [ "macos-13", "macos-latest", "ubuntu-latest", "windows-latest" ]
 
   verify-apps:
     name: Build app
     needs: [ package, package-automation, unit-tests ]
-    uses: beeware/.github/.github/workflows/app-build-verify.yml@main
+    # TODO: Revert to main when .github#172 is merged
+    uses: beeware/.github/.github/workflows/app-build-verify.yml@599f2fbb61c17aa94a962f26647f31a879a31052
     with:
-      # This *must* be the version of Python that is the system Python on the
-      # Ubuntu version used to run Linux tests. We use a fixed ubuntu-22.04
-      # rather than `-latest` because at some point, `-latest` will become
-      # `-24.04`, but it will be a soft changeover, which will cause havoc with
-      # the hard Python version requirement for local system packages.
-      python-version: "3.10"
+      python-version: ${{ matrix.python-version }}
       runner-os: ${{ matrix.runner-os }}
       framework: ${{ matrix.framework }}
     strategy:
       fail-fast: false
       matrix:
         framework: [ "toga", "pyside6", "pygame", "console" ]
-        runner-os: [ "macos-12", "macos-14", "ubuntu-22.04", "windows-latest" ]
+        runner-os: [ "macos-13", "macos-latest", "ubuntu-latest", "windows-latest" ]
+
+        includes:
+          # A version of Python that is supported by all the GUI toolkits.
+          - python-version: "3.12"
+
+          # We need to use the system Python on Ubuntu
+          - runner-os: ubuntu-latest
+            python-version: system

pyproject.toml

@@ -53,6 +53,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3 :: Only",
     "Topic :: Software Development",
     "Topic :: Utilities",

tox.ini

@@ -16,17 +16,18 @@ extend-ignore =
     E203,
 
 [tox]
-envlist = towncrier-check,docs-lint,pre-commit,py{39,310,311,312,313}-cov,coverage
+envlist = towncrier-check,docs-lint,pre-commit,py{39,310,311,312,313,314}-cov,coverage
 labels =
-    test = py{39,310,311,312,313}-cov,coverage
+    test = py{39,310,311,312,313,314}-cov,coverage
     test39 = py39-cov,coverage39
     test310 = py310-cov,coverage310
     test311 = py311-cov,coverage311
     test312 = py312-cov,coverage312
     test313 = py313-cov,coverage313
-    test-fast = py{39,310,311,312,313}-fast
-    test-platform = py{39,310,311,312,313}-cov,coverage-platform
-    ci = towncrier-check,docs-lint,pre-commit,py{39,310,311,312,313}-cov,coverage-platform
+    test314 = py314-cov,coverage314
+    test-fast = py{39,310,311,312,313,314}-fast
+    test-platform = py{39,310,311,312,313,314}-cov,coverage-platform
+    ci = towncrier-check,docs-lint,pre-commit,py{39,310,311,312,313,314}-cov,coverage-platform
 skip_missing_interpreters = True
 
 [testenv:pre-commit]
@@ -35,7 +36,7 @@ wheel_build_env = .pkg
 extras = dev
 commands = pre-commit run --all-files --show-diff-on-failure --color=always
 
-[testenv:py{,39,310,311,312,313}{,-fast,-cov}]
+[testenv:py{,39,310,311,312,313,314}{,-fast,-cov}]
 package = wheel
 wheel_build_env = .pkg
 depends: pre-commit
@@ -49,19 +50,20 @@ commands =
     cov  : python -X warn_default_encoding -m coverage run -m pytest {posargs:-vv --color yes}
     fast : python -m pytest {posargs:-vv --color yes -n auto}
 
-[testenv:coverage{,39,310,311,312,313}{,-ci}{,-platform,-platform-linux,-platform-macos,-platform-windows,-project}{,-keep}{,-html}]
+[testenv:coverage{,39,310,311,312,313,314}{,-ci}{,-platform,-platform-linux,-platform-macos,-platform-windows,-project}{,-keep}{,-html}]
 package = wheel
 wheel_build_env = .pkg
-depends = pre-commit,py{,39,310,311,312,313}{,-cov}
+depends = pre-commit,py{,39,310,311,312,313,314}{,-cov}
 # by default, coverage should run on oldest supported Python for testing platform coverage.
 # however, coverage for a particular Python version should match the version used for pytest.
 base_python =
-    coverage: py39,py310,py311,py312,py313
+    coverage: py39,py310,py311,py312,py313,py314
     coverage39: py39
     coverage310: py310
     coverage311: py311
     coverage312: py312
     coverage313: py313
+    coverage314: py314
 passenv = COVERAGE_FILE
 setenv =
     keep: COMBINE_FLAGS = --keep