Cancel in-flight builds on PR update (#282)

Author: charliermarsh

.github/workflows/apple.yml

@@ -6,6 +6,11 @@ on:
   pull_request:
   schedule:
     - cron: '13 11 * * *'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   pythonbuild:
     runs-on: 'macos-13'

.github/workflows/check.yml

@@ -1,10 +1,13 @@
-
 name: Check
 
 on:
   push:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   check:
     runs-on: "ubuntu-latest"

.github/workflows/linux.yml

@@ -6,6 +6,11 @@ on:
   pull_request:
   schedule:
     - cron: '13 11 * * *'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   pythonbuild:
     runs-on: ubuntu-22.04

.github/workflows/windows.yml

@@ -6,6 +6,11 @@ on:
   pull_request:
   schedule:
     - cron: '13 11 * * *'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   pythonbuild:
     runs-on: 'windows-2019'