From 19b6f78c8a0d1f0a4dbba0b37bf5472080e2a7fe Mon Sep 17 00:00:00 2001
From: Sukka <isukkaw@gmail.com>
Date: Sun, 16 Jun 2024 01:10:30 +0800
Subject: [PATCH] ci(alpha): avoid race by cancel non-latest concurrent runs
 (#1213)

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

diff --git a/.github/workflows/alpha.yml b/.github/workflows/alpha.yml
index 7b2cbe4..6579df0 100644
--- a/.github/workflows/alpha.yml
+++ b/.github/workflows/alpha.yml
@@ -9,6 +9,10 @@ permissions: write-all
 env:
   CARGO_INCREMENTAL: 0
   RUST_BACKTRACE: short
+concurrency:
+  # only allow per workflow per commit (and not pr) to run at a time
+  group: "${{ github.workflow }} - ${{ github.head_ref || github.ref }}"
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
 
 jobs:
   alpha: