Don't block PRs on linkcheck

.github/workflows/linkcheck.yml

@@ -0,0 +1,51 @@
+name: Test
+
+on:
+  push:
+    branches-ignore:
+    - gh-readonly-queue/**  # Temporary merge queue-related GH-made branches
+  pull_request:
+    types:
+    - opened  # default
+    - synchronize  # default
+    - reopened  # default
+    - ready_for_review  # used in PRs created from GitHub Actions workflows
+  schedule:
+    - cron: '0 0 * * *'  # Run daily at midnight UTC
+  workflow_call:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}-linkcheck
+  cancel-in-progress: true
+
+permissions: {}
+
+jobs:
+  build:
+    name: linkcheck
+    if: ${{ github.repository_owner == 'pypa' }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
+        with:
+          python-version: "3.11"
+          cache: 'pip'
+          cache-dependency-path: 'requirements.txt'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade nox virtualenv
+
+      - name: Nox linkcheck
+        env:
+          # Authenticate github.com requests during linkcheck to avoid rate limits.
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          python -m nox -s linkcheck

.github/workflows/test.yml

@@ -29,7 +29,6 @@ jobs:
       matrix:
         noxenv:
         - build
-        - linkcheck
 
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -48,9 +47,6 @@ jobs:
           python -m pip install --upgrade nox virtualenv
 
       - name: Nox ${{ matrix.noxenv }}
-        env:
-          # Authenticate github.com requests during linkcheck to avoid rate limits.
-          GITHUB_TOKEN: ${{ github.token }}
         run: |
           python -m nox -s ${{ matrix.noxenv }}