From 79d671a74995e6e648ba7f2358cb39df5a58026e Mon Sep 17 00:00:00 2001
From: Daniel Winkler <dw@dwinkler.org>
Date: Tue, 26 Aug 2025 14:07:23 +1000
Subject: [PATCH] do not allow concurrent runs

---
 .github/workflows/check.yml       | 3 +++
 .github/workflows/check_macos.yml | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 287e625..0594600 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -2,6 +2,9 @@ name: "Test template"
 on:
   workflow_dispatch: # allows manual triggering
   push:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
   tests:
     runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/check_macos.yml b/.github/workflows/check_macos.yml
index 23a6cf4..23b11d9 100644
--- a/.github/workflows/check_macos.yml
+++ b/.github/workflows/check_macos.yml
@@ -4,6 +4,9 @@ on:
   push:
     branches:
       - 'update_n'
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
   tests:
     runs-on: ${{ matrix.os }}