From 8505c48a34436b11e7cf3230fb281bef53f662eb Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 21 Feb 2023 14:58:57 +0100
Subject: [PATCH] Cancel in progress builds of PRs when a new one starts

Add a snippet based on the example in

https://docs.github.com/en/actions/using-jobs/using-concurrency#example-only-cancel-in-progress-jobs-or-runs-for-the-current-workflow

to all CI workflows to cancel the currently running build when a new one
starts. This should ensure that we don't keep building the old version
of the PR after a new one has been pushed.
---
 .github/workflows/ci.yml           | 4 ++++
 .github/workflows/ci_cmake.yml     | 4 ++++
 .github/workflows/ci_mac.yml       | 4 ++++
 .github/workflows/ci_mac_xcode.yml | 4 ++++
 .github/workflows/ci_msw.yml       | 4 ++++
 .github/workflows/ci_msw_cross.yml | 4 ++++
 6 files changed, 24 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9baf826ed4..2ca3b7ca04 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -56,6 +56,10 @@ on:
         required: false
         default: false
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci_cmake.yml b/.github/workflows/ci_cmake.yml
index 0239e2c1e3..99ee30b7a0 100644
--- a/.github/workflows/ci_cmake.yml
+++ b/.github/workflows/ci_cmake.yml
@@ -45,6 +45,10 @@ on:
       - '*.yml'
       - 'wxwidgets.props'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci_mac.yml b/.github/workflows/ci_mac.yml
index 53ac3fa002..455dcca932 100644
--- a/.github/workflows/ci_mac.yml
+++ b/.github/workflows/ci_mac.yml
@@ -59,6 +59,10 @@ on:
     - 'CMakeLists.txt'
     - 'wxwidgets.props'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci_mac_xcode.yml b/.github/workflows/ci_mac_xcode.yml
index 3315053d4a..594f6d4896 100644
--- a/.github/workflows/ci_mac_xcode.yml
+++ b/.github/workflows/ci_mac_xcode.yml
@@ -59,6 +59,10 @@ on:
     - 'CMakeLists.txt'
     - 'wxwidgets.props'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci_msw.yml b/.github/workflows/ci_msw.yml
index dc449add8c..541d9a5ed2 100644
--- a/.github/workflows/ci_msw.yml
+++ b/.github/workflows/ci_msw.yml
@@ -49,6 +49,10 @@ on:
       - '*.yml'
       - 'CMakeLists.txt'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/ci_msw_cross.yml b/.github/workflows/ci_msw_cross.yml
index 098c152930..03cdf88cc9 100644
--- a/.github/workflows/ci_msw_cross.yml
+++ b/.github/workflows/ci_msw_cross.yml
@@ -53,6 +53,10 @@ on:
       - 'wxwidgets.props'
       - 'CMakeLists.txt'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read