remove hatch from CI

.github/workflows/pythonpackage.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
     defaults:
       run:
         shell: bash
@@ -19,14 +19,26 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64
-      - name: Install Hatch
-        run: pip install --upgrade hatch
+      - name: Install and configure Poetry
+        uses: snok/install-poetry@v1.3.3
+        with:
+          version: 1.2.2
+          virtualenvs-in-project: true
+      - name: Install dependencies
+        run: poetry install --extras "dev"
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
       - name: Format check with black
-        run: hatch run lint:check
+        run: |
+          source $VENV
+          make format-check
 #      - name: Typecheck with mypy
-#        run: hatch run lint:typing
+#        run: |
+#          source $VENV
+#          make typecheck
       - name: Test with pytest
-        run: hatch run pytest tests -v --cov=./src/textual --cov-report=xml:./coverage.xml --cov-report term-missing
+        run: |
+          source $VENV
+          pytest tests -v --cov=./src/textual --cov-report=xml:./coverage.xml --cov-report term-missing
       - name: Upload snapshot report
         if: always()
         uses: actions/upload-artifact@v3