From 771397389c6490e21508c0c2afbe2a3fdeac8e53 Mon Sep 17 00:00:00 2001
From: Robin <robin@robin.town>
Date: Wed, 5 Mar 2025 05:44:10 -0500
Subject: [PATCH] Prevent PRs with the X-Blocked label from being merged
 (#3041)

Copied from matrix-js-sdk (https://github.com/matrix-org/matrix-js-sdk/blob/develop/.github/workflows/pull_request.yaml#L31)
---
 .github/workflows/blocked.yaml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 .github/workflows/blocked.yaml

diff --git a/.github/workflows/blocked.yaml b/.github/workflows/blocked.yaml
new file mode 100644
index 00000000..d6e592cb
--- /dev/null
+++ b/.github/workflows/blocked.yaml
@@ -0,0 +1,17 @@
+name: Prevent blocked
+on:
+  pull_request:
+    types: [opened, labeled, unlabeled]
+jobs:
+  prevent-blocked:
+    name: Prevent blocked
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: read
+    steps:
+      - name: Add notice
+        uses: actions/github-script@v7
+        if: contains(github.event.pull_request.labels.*.name, 'X-Blocked')
+        with:
+          script: |
+            core.setFailed("PR has been labeled with X-Blocked; it cannot be merged.");