allow using system python rpm bindings

.github/workflows/main.yml

@@ -31,6 +31,14 @@ jobs:
           python-version: ${{ matrix.python }}
       - name: prepare a redhat-uep.pem, even if we run on Ubuntu
         run: sudo mkdir -p /etc/rhsm/ca/ && sudo curl -o /etc/rhsm/ca/redhat-uep.pem https://ftp.redhat.com/redhat/convert2rhel/redhat-uep.pem
+      - name: Install system dependencies
+        # libyaml-dev for PyYAML, rpm for rpm-py-installer, python3-rpm for rpm-shim
+        run: sudo apt-get install -y libyaml-dev rpm python3-rpm
+      - name: Fix up Python RPM binding filenames so that other Pythons find it
+        run: |
+          for file in /usr/lib/python3/dist-packages/rpm/_rpm*.cpython-*.so; do
+            sudo ln -s ${file} $(echo ${file} | sed 's/\.cpython[^.]*//');
+          done
       - name: Install dependencies
         run: pip install tox tox-gh-actions
       - name: Run tests