From 7f3424e1b88b4617b012515775aebab088e6668d Mon Sep 17 00:00:00 2001
From: Sam Van Campenhout <sam.van.campenhout@gmail.com>
Date: Thu, 3 Feb 2022 22:06:35 +0100
Subject: [PATCH] Cancel workflows when they become outdated

This change ensures that workflows are canceled when new changes come in which means resources aren't wasted on outdated workflows.

More information: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#concurrency
---
 .github/workflows/ci.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c7508886f..986525445 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,10 @@ on:
   pull_request:
     branches: [main]
 
+concurrency:
+  group: ci-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   preflight:
     runs-on: ubuntu-latest