ci: use poetry directly in CI build - skip make

.github/workflows/python-package.yml

@@ -27,33 +27,28 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install pre-install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install poetry wheel
-        poetry config virtualenvs.in-project true
-
-    - name: Cache venv
-      uses: actions/cache@v2
-      with:
-        path: .venv
-        key: ${{ matrix.os }}-${{ matrix.python-version }}-venv-${{ hashFiles('poetry.lock') }}
+    - name: Install Poetry
+      uses: snok/install-poetry@v1.1.1
 
-    - name: Install project dependencies
+    - name: Install project and dependencies
       run: |
-        poetry install --no-root --extras docs --extras test
+        poetry install
 
     - name: Test with pytest
       run: |
-        make test
+        poetry run pytest --cov=pycgtool --cov-report=
+
+    - name: Lint with flake8 - stop build if fails
+      run: |
+        poetry run prospector --strictness veryhigh --test-warnings --tool pyflakes
 
-    - name: Lint with flake8 and prospector
+    - name: Full lint - don't stop build
       run: |
-        make lint
+        poetry run prospector --strictness veryhigh --test-warnings --member-warnings --max-line-length 120 --zero-exit
 
     - name: Test that docs build
       run: |
-        make docs
+        SPHINXBUILD="poetry run sphinx-build" make -C docs html
 
     - name: Check that test coverage is above 80%
       run: |