Revert "test a different way of installing python"

This reverts commit caf33c6.

.github/workflows/nightly_ci_build.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       matrix:
         # os: container operations in GHA only work on Ubuntu
-        simulation-type: [electric]  # basic, GEB, residential,
+        simulation-type: [basic, GEB, residential, electric]
         # python-version: No need to test more than 1 python-version
     # runs-on: ${{ matrix.os }}
     runs-on: ubuntu-latest
@@ -46,6 +46,10 @@ jobs:
           ruby --version
           bundle update
           bundle exec certified-update
+      - name: Install Python dependencies
+        # Only the electric tests need to install python dependencies
+        if: ${{ matrix.simulation-type == 'electric' }}
+        run: bundle exec uo install_python
       - name: Test project setup
         # We only need to run these tests once, not every matrix iteration.
         if: ${{ matrix.simulation-type == 'electric' }}
@@ -56,9 +60,7 @@ jobs:
           bundle exec rspec -e 'Update project directory'
           bundle exec rspec -e 'Install python dependencies'
       - name: Test simulations
-        run: |
-          bundle exec uo install_python
-          bundle exec rspec -e 'Run and work with a small ${{ matrix.simulation-type }} simulation'
+        run: bundle exec rspec -e 'Run and work with a small ${{ matrix.simulation-type }} simulation'
       - name: Upload artifacts
       # Save results for examination - useful for debugging
         uses: actions/upload-artifact@v3