From a1dbe73e921ab542cacc45791f465422a5dc60ee Mon Sep 17 00:00:00 2001
From: Derek <alexanderderekrein@gmail.com>
Date: Fri, 15 Jul 2022 09:32:13 +0200
Subject: [PATCH] feat: uses concurrency to cancel obsolete runs

---
 .github/workflows/swift.yml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index 7dc66c564..32ac88a03 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -6,6 +6,15 @@ on:
   pull_request:
     branches: [ main, develop ]
 
+concurrency:
+  # Support push/pr as event types with different behaviors each:
+  # 1. push: queue up builds by branch
+  # 2. pr: only allow one run per PR
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.ref_name }}
+  # If there is already a workflow running for the same pull request, cancel it
+  # For non-PR triggers queue up builds
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:    
     runs-on: macos-latest