fix: Refine CI matrix configuration

- Map each tox environment to specific Python version
- Add proper matrix includes
- Improve error reporting with verbose tox output
- Fix dependency installation steps

.github/workflows/ci.yml

@@ -31,22 +31,47 @@ jobs:
           - pypy39-nocov
           - pypy310-cover
           - pypy310-nocov
+        include:
+          - tox-env: py38-cover
+            python-version: "3.8"
+          - tox-env: py38-nocov
+            python-version: "3.8"
+          - tox-env: py39-cover
+            python-version: "3.9"
+          - tox-env: py39-nocov
+            python-version: "3.9"
+          - tox-env: py310-cover
+            python-version: "3.10"
+          - tox-env: py310-nocov
+            python-version: "3.10"
+          - tox-env: py311-cover
+            python-version: "3.11"
+          - tox-env: py311-nocov
+            python-version: "3.11"
+          - tox-env: py312-cover
+            python-version: "3.12"
+          - tox-env: py312-nocov
+            python-version: "3.12"
+          - tox-env: pypy38-cover
+            python-version: "pypy-3.8"
+          - tox-env: pypy38-nocov
+            python-version: "pypy-3.8"
+          - tox-env: pypy39-cover
+            python-version: "pypy-3.9"
+          - tox-env: pypy39-nocov
+            python-version: "pypy-3.9"
+          - tox-env: pypy310-cover
+            python-version: "pypy-3.10"
+          - tox-env: pypy310-nocov
+            python-version: "pypy-3.10"
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: |
-            pypy-3.8
-            pypy-3.9
-            pypy-3.10
-            3.8
-            3.9
-            3.10
-            3.11
-            3.12
+          python-version: ${{ matrix.python-version }}
           architecture: x64
 
       - name: Install dependencies
@@ -58,16 +83,19 @@ jobs:
       - name: Test with tox
         env:
           TOXENV: ${{ matrix.tox-env }}
-        run: tox
+        run: tox -v
 
   check:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.x"
-      - run: pip install tox
+          python-version: "3.11"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install tox
       - run: tox -e check
 
   docs:
@@ -76,6 +104,9 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.x"
-      - run: pip install tox
+          python-version: "3.11"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install tox
       - run: tox -e docs