From c9c601ab6e94ef8ad85d51abccfa7d8db19e9b9f Mon Sep 17 00:00:00 2001
From: Bryan Richter <bryan@haskell.foundation>
Date: Fri, 13 Feb 2026 10:05:37 +0200
Subject: [PATCH] Cancel earlier pipelines

Why this isn't a default is beyond me.
---
 .github/workflows/build.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 24e2d8e..0191750 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,6 +4,9 @@ on:
     branches:
       - master
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
   stack-test:
     name: stack test