flail: attempt testing EOL pythons in workflow

.github/workflows/tests.yml

@@ -8,37 +8,70 @@ on:
 
 jobs:
   tests:
-    name: Python ${{ matrix.python-version }} (${{ matrix.runner }})
-    runs-on: ${{ matrix.runner }}
+    name: Python ${{ matrix.python }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
     strategy:
       fail-fast: false
       matrix:
-        runner: [ubuntu-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", pypy-2.7, pypy-3.7]
+        python: ["3.8", "3.9", "3.10", "3.11", "3.12", pypy3.8, pypy3.10]
         include:
-          - python-version: "2.7"
-            runner: ubuntu-20.04
-          - python-version: "3.6"
-            runner: ubuntu-20.04
+          - {python: "3.6", os: ubuntu-20.04, tox3: true}
+          - {python: "3.7", tox3: true}
+          - {python: pypy2.7, tox3: true}
 
     steps:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v4
+      id: setup-python
       with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+        python-version: ${{ matrix.python }}
+
+    - run: python -m pip install --upgrade pip setuptools
+    - name: Install tox4
+      run: pip install tox
+      if: ${{ ! matrix.tox3 }}
+    - name: Install tox3
+      run: pip install 'tox<4' 'virtualenv<20.22.0'
+      if: ${{ matrix.tox3 }}
+
+    - name: Compute tox env name
       run: |
-        python -m pip install --upgrade pip setuptools
-        pip install tox tox-gh-actions
+        toxenv=$(python -c '
+        ver=r"${{ matrix.python }}".replace(".", "")
+        print("py" + ver if ver[0].isdigit() else ver)
+        ')
+        echo toxenv is "$toxenv";
+        echo "TOXENV=$toxenv" >> "$GITHUB_ENV"
+
     - name: Test with tox
       run: tox
+
+    - uses: actions/upload-artifact@v3
+      with:
+        name: coverage-data
+        path: .coverage.*
+
+  test-py27:
+    name: Python 2.7
+    runs-on: ubuntu-latest
+    container: python:2.7-buster
+
+    steps:
+    - uses: actions/checkout@v3
+    - run: python -m pip install --upgrade pip setuptools
+    - name: Install tox3
+      run: pip install 'tox<4' 'virtualenv<20.22.0'
+
+    - name: Test with tox
+      run: tox -e py27
+
     - uses: actions/upload-artifact@v3
       with:
         name: coverage-data
         path: .coverage.*
 
   coverage:
-    needs: tests
+    needs: [tests, test-py27]
     if: ${{ success() || failure() }}
     runs-on: ubuntu-latest
     steps:

tox.ini

@@ -10,20 +10,6 @@ envlist =
 labels =
     eol = eol_py{27,36,37,py27}
 
-[gh-actions]
-python =
-    2.7: py27
-    3.6: py36
-    3.7: py37
-    3.8: py38
-    3.9: py39
-    3.10: py310
-    3.11: py311
-    3.12: py312
-    pypy-2.7: pypy27
-    pypy-3.8: pypy38
-    pypy-3.10: pypy310
-
 [testenv]
 deps =
     coverage[toml]