From db38aaf54cef24fed9a1cd8c65dbbcc60e36c5c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kevin=20Gr=C3=BCneberg?= <k.grueneberg1994@gmail.com>
Date: Sat, 27 Sep 2025 16:29:43 +0800
Subject: [PATCH] build: automatically cancel old tests/build on new push

Currently, whenever you push any commit to your branch, the old builds are still running and a new build is started. Once a new commit is added, the old test results no longer matter and it's just a waste of CI resources. Also reduces confusion with multiple builds running in parallel for the same branch/possibly blocking any merges.

With this little change, we ensure that whenever a new commit is added, the previous build is immediately canceled/stopped and only the build (latest commit) runs.
---
 .github/workflows/check-shellscripts.yml | 4 ++++
 .github/workflows/ci.yml                 | 4 ++++
 .github/workflows/nix-build.yml          | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/.github/workflows/check-shellscripts.yml b/.github/workflows/check-shellscripts.yml
index aabf17413..9d1389e9e 100644
--- a/.github/workflows/check-shellscripts.yml
+++ b/.github/workflows/check-shellscripts.yml
@@ -7,6 +7,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f10f5f58e..12abc8e91 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check-release-version:
     timeout-minutes: 5
diff --git a/.github/workflows/nix-build.yml b/.github/workflows/nix-build.yml
index c2f383961..695dc2abf 100644
--- a/.github/workflows/nix-build.yml
+++ b/.github/workflows/nix-build.yml
@@ -14,6 +14,10 @@ permissions:
   contents: write
   packages: write
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build-run-image:
     strategy: