From 4a2c3afe96b12a5ae556590ed2e9d204ecbcaebb Mon Sep 17 00:00:00 2001
From: Reuven Harrison <reuvenharrison@gmail.com>
Date: Sat, 27 Jun 2026 10:24:10 +0300
Subject: [PATCH] ci: add concurrency groups to cancel superseded PR runs

A new push to a PR branch now cancels the in-progress run for that ref across the
seven test-* workflows (pull_request events only; main pushes always finish).
Frees runner slots and speeds feedback.
---
 .github/workflows/test-breaking.yaml         | 4 ++++
 .github/workflows/test-changelog.yaml        | 4 ++++
 .github/workflows/test-diff.yaml             | 4 ++++
 .github/workflows/test-error-annotation.yaml | 4 ++++
 .github/workflows/test-pr-comment.yaml       | 4 ++++
 .github/workflows/test-validate.yaml         | 4 ++++
 .github/workflows/test-verify.yaml           | 4 ++++
 7 files changed, 28 insertions(+)

diff --git a/.github/workflows/test-breaking.yaml b/.github/workflows/test-breaking.yaml
index 1d88bdf..f5a6e22 100644
--- a/.github/workflows/test-breaking.yaml
+++ b/.github/workflows/test-breaking.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   oasdiff_breaking:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-changelog.yaml b/.github/workflows/test-changelog.yaml
index ed7fe83..e5ef6f6 100644
--- a/.github/workflows/test-changelog.yaml
+++ b/.github/workflows/test-changelog.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   oasdiff_changelog:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-diff.yaml b/.github/workflows/test-diff.yaml
index d5cd1df..c398e74 100644
--- a/.github/workflows/test-diff.yaml
+++ b/.github/workflows/test-diff.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   oasdiff_diff:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-error-annotation.yaml b/.github/workflows/test-error-annotation.yaml
index b4537f4..c47febb 100644
--- a/.github/workflows/test-error-annotation.yaml
+++ b/.github/workflows/test-error-annotation.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   entrypoint_error_annotation:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-pr-comment.yaml b/.github/workflows/test-pr-comment.yaml
index 5fd91df..0314362 100644
--- a/.github/workflows/test-pr-comment.yaml
+++ b/.github/workflows/test-pr-comment.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   pr_comment_tolerates_oasdiff_fail_on:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-validate.yaml b/.github/workflows/test-validate.yaml
index fe9ed2d..1ac46ce 100644
--- a/.github/workflows/test-validate.yaml
+++ b/.github/workflows/test-validate.yaml
@@ -3,6 +3,10 @@ on:
   push:
     branches: [main]
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   oasdiff_validate_valid:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-verify.yaml b/.github/workflows/test-verify.yaml
index 4d672ae..7673b99 100644
--- a/.github/workflows/test-verify.yaml
+++ b/.github/workflows/test-verify.yaml
@@ -4,6 +4,10 @@ on:
     branches: [main]
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   verify_all_green:
     runs-on: ubuntu-latest