.github/workflows: open issue when cycle is detected

.github/workflows/cron.yml

@@ -25,7 +25,7 @@ jobs:
           # Upgrade again (in case there was a xbps update)
           xbps-install -yu
           # Install script dependencies
-          xbps-install -y python3-networkx
+          xbps-install -y python3-networkx github-cli
       - uses: actions/checkout@v1
         with:
           fetch-depth: 1
@@ -34,4 +34,15 @@ jobs:
          ln -s "$(pwd)" /hostrepo &&
          common/travis/set_mirror.sh &&
          common/travis/prepare.sh
-      - run: common/scripts/xbps-cycles.py
+      - name: Find cycles and open issues
+        run: |
+         common/scripts/xbps-cycles.py | tee cycles
+         grep 'Cycle:' cycles | while read -r line; do
+             if gh issue list -R "$GITHUB_REPOSITORY" -S "$line" | grep .; then
+                 printf "Issue on '%s' already exists.\n" "$line"
+             else
+                 gh issue create -R "$GITHUB_REPOSITORY" -b '' -t "$line"
+             fi
+         done
+        env:
+            GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN }}