From 274eeae5e495b6ffd0075bce275cbd6db8661c2d Mon Sep 17 00:00:00 2001
From: Tom Scogland <scogland1@llnl.gov>
Date: Sun, 23 Jul 2023 00:43:40 -0700
Subject: [PATCH] ensure superceded PR workflows are cancelled

Add a concurrency tag to the github actions config so it will cancel
pending workflows that are superceded by newer commits.
---
 .github/workflows/main.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2bf45aa59..13ece8599 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,8 @@
 on: [ pull_request, push, workflow_dispatch ]
 name: ci
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 jobs:
   check-pr:
     name: validate commits