mark and close inactive issue after half a year

open-bot.yaml

@@ -374,3 +374,58 @@ rules:
       message: |-
         I've moved it to {{comment_match.[1]}}.
     close: true
+
+
+
+# mark inactive issues with inactive label
+# close them when no activity after warning
+- filters:
+    issue: true
+    open: true
+    not:
+      label: inactive
+    ensure:
+      value: "{{issue.reactions.[+1]}}"
+      range: "< 10"
+    last_action_age: 26w # half a year
+  actions:
+    comment:
+      identifer: inactive-warning
+      message: |-
+        **This issue had no activity for at least half a year.**
+
+        It's subject to automatic issue closing if there is no activity in the next 15 days.
+    label: inactive
+- filters:
+    open: true
+    label: inactive
+    last_action_age:
+      maximum: 26w # half a year
+  actions:
+    label:
+      remove:
+      - inactive
+- filters:
+    open: true
+    label: inactive
+    last_action_age:
+      minimum: 15d
+      includeBotActions: true
+  actions:
+    close: true
+    comment:
+      identifer: inactive-close
+      message: |-
+        Issue was closed because of inactivity.
+
+        If you think this is still a valid issue, please file a new issue with additional information.
+
+
+
+
+
+# Check issues every week
+- filters:
+    open: true
+  actions:
+    schedule: 1w