run-tests: with-extension env var must be set when building project

.github/workflows/run-tests.yml

@@ -20,12 +20,12 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
+      env:
+        WITHOUT_EXTENSION: ${{ matrix.with-extension }}
       run: |
         python -m pip install --upgrade pip wheel setuptools coveralls pytest
         python setup.py develop
     - name: Run tests
-      env:
-        WITHOUT_EXTENSION: ${{ matrix.with-extension }}
       run: |
         coverage run --source=mwparserfromhell -m pytest
     - name: Submit to coveralls