Create stale.yml

Close stale tickets and pull requests

Author: diehlpk

.github/stale.yml

@@ -0,0 +1,29 @@
+# Copyright (c) 2019 Hartmut Kaiser
+#               2024 Patrick Diehl
+#
+# SPDX-License-Identifier: BSL-1.0
+# Distributed under the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 180
+
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 30
+
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - "tag: pinned"
+
+# Label to use when marking an issue as stale
+staleLabel: "tag: wontfix"
+
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: >
+  This issue has been automatically closed. Please re-open if necessary.