Shared CI, Dependabot auto-merge and current goreleaser

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: gomod
+    directory: /
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: ":arrow_up:"
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: ":arrow_up:"

.github/workflows/ci.yaml

@@ -1,19 +1,24 @@
 name: CI
-on: [push, pull_request]
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
 
 jobs:
-  build:
+  ci:
+    name: CI
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: ["1.17"]
-    name: Go ${{ matrix.go }} sample
     steps:
-      - uses: actions/checkout@v3
-      - name: Setup go
-        uses: actions/setup-go@v2
+      - uses: actions/checkout@v7
+      - uses: actions/setup-go@v7
         with:
-          go-version: ${{ matrix.go }}
-      - run: |
-          go build
-          go test ./...
+          go-version: stable
+      - name: Format
+        run: test -z "$(gofmt -l .)"
+      - run: go vet ./...
+      - run: go build ./...
+      - run: go test -race ./...

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,39 @@
+name: Dependabot Auto Merge
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot-auto-merge:
+    name: Dependabot Auto Merge
+    runs-on: ubuntu-latest
+
+    if: >-
+      github.event.pull_request.user.login == 'dependabot[bot]'
+
+    steps:
+      # Every update type, majors included: the ruleset's required CI check decides
+      # whether it actually merges (auto-merge waits for it).
+      #
+      # The built-in token can never merge a PR that edits .github/workflows/*
+      # ("refusing to allow a GitHub App to create or update workflow ... without workflows
+      # permission"), which is what Dependabot's action-version bumps are. Those are left for a
+      # human or the sweep tool instead of failing this job.
+      - name: Enable auto-merge
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_URL: ${{ github.event.pull_request.html_url }}
+        run: |
+          if gh pr diff "$PR_URL" --name-only | grep -q '^\.github/workflows/'; then
+            echo "::notice::This PR edits workflow files, which the built-in token cannot merge. Merge it by hand."
+            exit 0
+          fi
+          gh pr merge --auto --squash "$PR_URL"

.github/workflows/goreleaser.yaml

@@ -12,19 +12,16 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v3
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
-      - name: Set up Go
-        uses: actions/setup-go@v2
+      - uses: actions/setup-go@v7
         with:
-          go-version: 1.17
-      - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v2
+          go-version: stable
+      - uses: goreleaser/goreleaser-action@v7
         with:
           distribution: goreleaser
-          version: latest
-          args: release --rm-dist
+          version: "~> v2"
+          args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}