1 files changed, 54 insertions, 0 deletions
diff --git a/.github/workflows/check-links.yml b/.github/workflows/check-links.yml
new file mode 100644
index 0000000..97ddc8a
--- /dev/null
+++ b/.github/workflows/check-links.yml
@@ -0,0 +1,54 @@
+name: Check links
+
+"on":
+  pull_request:
+    branches: [main]
+    paths:
+      - "**.md"
+      - .github/workflows/check-links.yaml
+      - flake.lock
+  push:
+    branches: [main]
+    paths:
+      - "**.md"
+      - .github/workflows/check-links.yaml
+      - flake.lock
+  schedule:
+    # Run once a month on the 28th.
+    - cron: "0 0 28 * *"
+  workflow_dispatch:
+
+jobs:
+  lychee:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@v16
+      - uses: DeterminateSystems/magic-nix-cache-action@v8
+      - name: Build the site
+        run: nix build --print-build-logs
+      - name: Restore lychee cache
+        uses: actions/cache/restore@v4
+        with:
+          path: .lycheecache
+          key: lychee-cache
+      - name: Check links
+        id: lychee
+        uses: lycheeverse/lychee-action@v2
+        with:
+          fail: false
+      - name: Save lychee cache
+        uses: actions/cache/save@v4
+        if: always()
+        with:
+          key: lychee-cache
+          path: .lycheecache
+      - name: Create issue
+        if: steps.lychee.outputs.exit_code != 0
+        uses: peter-evans/create-issue-from-file@v5
+        with:
+          title: "[lychee] Broken links"
+          content-filepath: ./lychee/out.md
+          labels: bug, automated issue