TST: migrate from tox-gh-actions to tox-gh

.github/workflows/ci.yml

@@ -37,13 +37,18 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install Tox and any other packages
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install tox tox-gh-actions
-      - name: Test
-        run: tox -vvv
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v3
+      - name: Install tox
+        run: uv tool install --python-preference only-managed --python 3.13 tox --with tox-uv --with tox-gh
+      - name: Install Python
+        if: matrix.python-version != '3.13'
+        run: uv python install --python-preference only-managed ${{ matrix.python-version }}
+      - name: Setup test suite
+        run: tox run -vv --notest --skip-missing-interpreters false
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.python-version }}
+      - name: Run test suite
+        run: tox run
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.python-version }}

tox.ini

@@ -5,12 +5,12 @@ isolated_build = True
 requires =
     tox-uv # for oldest dependency testing
 
-[gh-actions]
+[gh]
 python =
-    3.9: py39, py39-docs, py39-dependencies, py39-versions, py39-unyt-module-test-function
-    3.10: py310
-    3.11: py311
-    3.12: py312
+    3.9 = py39, py39-docs, py39-dependencies, py39-versions, py39-unyt-module-test-function
+    3.10 = py310
+    3.11 = py311
+    3.12 = py312
 
 [testenv]
 depends = begin