From 372528fb5decfbec3956e4e5ae6b8e7d8d64cfb7 Mon Sep 17 00:00:00 2001
From: Steven Silvester <steven.silvester@ieee.org>
Date: Sun, 13 Feb 2022 08:50:18 -0600
Subject: [PATCH] Add concurrency limit in CI (#873)

---
 .github/workflows/main.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 04ce8704..7b760b16 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,6 +6,10 @@ on:
   schedule:
     - cron: "0 0 * * *" # daily
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 env:
   FORCE_COLOR: "1"
   TOX_TESTENV_PASSENV: "FORCE_COLOR"