move inputs and matrix to env vars

Author: joshuadavidthomas

.github/workflows/test.yml

@@ -46,8 +46,10 @@ jobs:
           enable-cache: true
 
       - id: set-matrix
+        env:
+          OS: ${{ inputs.os }}
         run: |
-          uv run noxfile.py --session gha_matrix -- "${{ inputs.os }}"
+          uv run noxfile.py --session gha_matrix -- "${OS}"
 
   test:
     name: Python ${{ matrix.python-version }}, Django ${{ matrix.django-version }} (${{ matrix.os }})
@@ -69,8 +71,11 @@ jobs:
           enable-cache: true
 
       - name: Run tests
+        env:
+          DJANGO_VERSION: ${{ matrix.django-version }}
+          PYTHON_VERSION: ${{ matrix.python-version }}
         run: |
-          uv run noxfile.py --session "tests(python='${{ matrix.python-version }}', django='${{ matrix.django-version }}')"
+          uv run noxfile.py --session "tests(python='${PYTHON_VERSION}', django='${DJANGO_VERSION}')"
 
   tests:
     runs-on: ubuntu-latest