TO-DROP: debug with tmate

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.github/workflows/main.yml

@@ -301,6 +301,9 @@ jobs:
       distro: ${{matrix.vector.pool}}
     runs-on: ${{matrix.vector.pool}}
     steps:
+    - uses: mxschmitt/action-tmate@v3
+      with:
+        detached: true
     - uses: actions/checkout@v4
     - run: ci/install-dependencies.sh
     - run: ci/run-build-and-tests.sh