From 68c5d9e17d66eb12e88e6ba895a1fe3ec4f74257 Mon Sep 17 00:00:00 2001
From: David Badura <david.badura@patchlevel.de>
Date: Sat, 17 Oct 2026 19:37:41 +0200
Subject: [PATCH] Cancel outdated CI runs

Adds a concurrency group to the CI workflows, so a new push to a pull
request or branch cancels the runs still going for the previous commit
instead of letting them finish for nothing. It uses the same group the
app repositories already have (github.workflow plus head_ref || ref),
so pull requests and branches never cancel each other. Release, notify
and docs deploy workflows are left as they are.
---
 .github/workflows/backward-compatibility-check.yml | 4 ++++
 .github/workflows/benchmark.yml                    | 4 ++++
 .github/workflows/coding-standard.yml              | 4 ++++
 .github/workflows/docs-check.yml                   | 4 ++++
 .github/workflows/mutation-tests-diff.yml          | 4 ++++
 .github/workflows/mutation-tests.yml               | 4 ++++
 .github/workflows/phpstan.yml                      | 4 ++++
 .github/workflows/unit.yml                         | 4 ++++
 8 files changed, 32 insertions(+)

diff --git a/.github/workflows/backward-compatibility-check.yml b/.github/workflows/backward-compatibility-check.yml
index e086865c..cd86d466 100644
--- a/.github/workflows/backward-compatibility-check.yml
+++ b/.github/workflows/backward-compatibility-check.yml
@@ -5,6 +5,10 @@ name: "Backward Compatibility Check"
 on:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   roave-backwards-compatibility-check:
     name: "Backward Compatibility Check"
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 12d36ad5..3989870b 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -5,6 +5,10 @@ name: "Benchmark"
 on:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   phpbench:
     name: "Benchmark"
diff --git a/.github/workflows/coding-standard.yml b/.github/workflows/coding-standard.yml
index a4e67668..fbc49fde 100644
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -9,6 +9,10 @@ on:
             - "[0-9]+.[0-9]+.x"
             - "renovate/*"
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     static-analysis-coding-standard:
         name: "Static Analysis by patchlevel/coding-standard"
diff --git a/.github/workflows/docs-check.yml b/.github/workflows/docs-check.yml
index d7e13bdd..d0bd5963 100644
--- a/.github/workflows/docs-check.yml
+++ b/.github/workflows/docs-check.yml
@@ -8,6 +8,10 @@ on:
         branches:
             - "[0-9]+.[0-9]+.x"
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     checkdocs:
         name: "Check Docs"
diff --git a/.github/workflows/mutation-tests-diff.yml b/.github/workflows/mutation-tests-diff.yml
index 999fe818..935e4ce2 100644
--- a/.github/workflows/mutation-tests-diff.yml
+++ b/.github/workflows/mutation-tests-diff.yml
@@ -5,6 +5,10 @@ name: "Mutation tests on diff"
 on:
     pull_request:
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     mutation-tests-diff:
         name: "Mutation tests on diff"
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index bc7e3020..9d753990 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -9,6 +9,10 @@ on:
             - "[0-9]+.[0-9]+.x"
             - "renovate/*"
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     mutation-tests:
         name: "Mutation tests"
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index c4ed1073..b27e8847 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -9,6 +9,10 @@ on:
             - "[0-9]+.[0-9]+.x"
             - "renovate/*"
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+    cancel-in-progress: true
+
 jobs:
     static-analysis-phpstan:
         name: "Static Analysis by PHPStan"
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 76f87457..3a843586 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -9,6 +9,10 @@ on:
       - "[0-9]+.[0-9]+.x"
       - "renovate/*"
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
     phpunit:
         name: "Unit tests"