Fix nightly tests

.github/workflows/nightly.yml

@@ -67,13 +67,15 @@ jobs:
       uses: ./.github/actions/install-aiida-core
       with:
         python-version: '3.11'
+        from-lock: 'true'
 
     - name: Setup environment
-      run: .github/workflows/setup.sh
+      # NOTE: virtual env in .venv created by uv in previous step
+      run: source .venv/bin/activate && .github/workflows/setup.sh
 
     - name: Run tests
       id: tests
-      run: .github/workflows/tests_nightly.sh
+      run: source .venv/bin/activate && .github/workflows/tests_nightly.sh
 
     - name: Slack notification
       # Always run this step (otherwise it would be skipped if any of the previous steps fail) but only if the
@@ -118,18 +120,19 @@ jobs:
       uses: ./.github/actions/install-aiida-core
       with:
         python-version: '3.11'
+        from-lock: 'true'
 
     - name: Setup SSH on localhost
-      run: .github/workflows/setup_ssh.sh
+      run: source .venv/bin/activate && .github/workflows/setup_ssh.sh
 
     - name: Suppress RabbitMQ version warning
-      run: verdi config set warnings.rabbitmq_version False
+      run: uv run verdi config set warnings.rabbitmq_version False
 
     - name: Run tests
       id: tests
       env:
         AIIDA_WARN_v3: 0
-      run: pytest -s --db-backend sqlite -m 'requires_rmq' tests/
+      run: uv run pytest -s --db-backend sqlite -m 'requires_rmq' tests/
 
     - name: Slack notification
       # Always run this step (otherwise it would be skipped if any of the previous steps fail) but only if the