From a9936f2a4fb791a9a4e15eb0be9d32f9fa1ba904 Mon Sep 17 00:00:00 2001
From: James Bradbury <github@jamesbradbury.net>
Date: Tue, 21 Jun 2022 16:05:38 +0100
Subject: [PATCH] enforce concurrency of jobs

---
 .github/workflows/nightly.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/nightly.yaml b/.github/workflows/nightly.yaml
index ba385e3..a9a8d24 100644
--- a/.github/workflows/nightly.yaml
+++ b/.github/workflows/nightly.yaml
@@ -5,6 +5,10 @@ on:
   push:
     branches: [ dev, ci/** ]
 
+concurrency:
+  group: environment-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   macbuild:
     runs-on: macos-latest