Add automated upgrade workflow for halide-llvm

.github/workflows/testing-make.yml

@@ -6,6 +6,9 @@ env:
 on:
   pull_request:
     types: [ opened, synchronize, reopened ]
+    paths-ignore:
+      - ".github/**"
+      - "!.github/workflows/testing-make.yml"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}

.github/workflows/upgrade-llvm.yml

@@ -0,0 +1,65 @@
+name: Upgrade halide-llvm
+
+on:
+  schedule:
+    - cron: "0 6 * * *"  # Daily at 1am EST / 2am EDT
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  upgrade:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v5
+
+      - name: Upgrade halide-llvm
+        run: uv lock -P halide-llvm
+
+      - name: Check for changes
+        id: diff
+        run: |
+          if git diff --quiet uv.lock; then
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+
+            # Extract new resolved versions from the diff
+            VERSIONS=$(git diff uv.lock \
+              | grep '^+.*name = "halide-llvm", version' \
+              | sed 's/.*version = "\([^"]*\)".*/\1/' \
+              | tr '\n' ',' | sed 's/,/, /g; s/, $//')
+            echo "versions=$VERSIONS" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Create or update PR
+        if: steps.diff.outputs.changed == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          BRANCH="automated/upgrade-halide-llvm"
+          TITLE="Upgrade halide-llvm to ${{ steps.diff.outputs.versions }}"
+
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git checkout -B "$BRANCH"
+          git add uv.lock
+          git commit -m "$TITLE"
+
+          # Update existing PR or create a new one
+          if gh pr view "$BRANCH" --json state -q .state 2>/dev/null | grep -q OPEN; then
+            git push -u origin "$BRANCH" --force-with-lease \
+              && gh pr edit "$BRANCH" --title "$TITLE"
+          else
+            # Delete stale remote branch (e.g. leftover from a merged PR)
+            git push origin --delete "$BRANCH" 2>/dev/null || true
+            git push -u origin "$BRANCH"
+            gh pr create \
+              --title "$TITLE" \
+              --body "Automated upgrade via \`uv lock -P halide-llvm\`." \
+              --head "$BRANCH"
+          fi

pyproject.toml

@@ -86,10 +86,10 @@ ci-base = [
     { include-group = "tools" },
 ]
 
-ci-llvm-main = [{ include-group = "ci-base" }, "halide-llvm==23.0.0.dev0+g80f627e6"]
-ci-llvm-22 = [{ include-group = "ci-base" }, "halide-llvm==22.1.0rc3"]
-ci-llvm-21 = [{ include-group = "ci-base" }, "halide-llvm==21.1.8"]
-ci-llvm-20 = [{ include-group = "ci-base" }, "halide-llvm==20.1.8"]
+ci-llvm-main = [{ include-group = "ci-base" }, "halide-llvm~=23.0.0.dev0"]
+ci-llvm-22 = [{ include-group = "ci-base" }, "halide-llvm~=22.1.0rc0"]
+ci-llvm-21 = [{ include-group = "ci-base" }, "halide-llvm~=21.1.0"]
+ci-llvm-20 = [{ include-group = "ci-base" }, "halide-llvm~=20.1.0"]
 
 [project.urls]
 Homepage = "https://halide-lang.org"