CI: Verify installations

Author: effigies

.github/workflows/pythonpackage.yml

@@ -25,11 +25,17 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+    - name: Install build dependencies
       run: |
         python -m pip install --upgrade pip
+    - name: Install Pydra
+      run: |
         pip install ${{ matrix.pydra }}
+        python -c "import pydra as m; print(f'{m.__name__} {m.__version__} @ {m.__file__}')"
+    - name: Install task package
+      run: |
         pip install ${{ matrix.pip-flags }} ".[dev]"
+        python -c "import pydra.tasks.TODO as m; print(f'{m.__name__} {m.__version__} @ {m.__file__}')"
     - name: Test with pytest
       run: |
         pytest -sv --doctest-modules pydra/tasks/TODO