install global and venv separately

Author: hjwp

.github/workflows/tests.yml

@@ -69,11 +69,16 @@ jobs:
             locales
           sudo locale-gen en_GB.UTF-8
 
-      - name: Install Python requirements.txt
+      - name: Install Python requirements.txt globally
         shell: bash
         run: |
           pip install .
 
+      - name: Install Python requirements.txt into virtualenv
+        shell: bash
+        run: |
+          make .venv/bin
+
       - name: Run chapter test
         shell: bash
         run: |