Update github actions

.github/workflows/ci.bazelrc

@@ -0,0 +1,20 @@
+# This file contains Bazel settings to apply on CI only.
+# It is referenced with a --bazelrc option in the call to bazel in ci.yaml
+common --curses=no
+#common --enable_bzlmod
+
+build --verbose_failures
+build --worker_verbose
+
+# Debug where options came from
+build --announce_rc
+# This directory is configured in GitHub actions to be persisted between runs.
+# We do not enable the repository cache to cache downloaded external artifacts
+# as these are generally faster to download again than to fetch them from the
+# GitHub actions cache.
+build --disk_cache=~/.cache/bazel
+# Don't rely on test logs being easily accessible from the test runner,
+# though it makes the log noisier.
+test --test_output=errors
+# Allows tests to run bazelisk-in-bazel, since this is the cache folder used
+test --test_env=XDG_CACHE_HOME

.github/workflows/release.yml

@@ -1,45 +1,41 @@
+# Cut a release whenever a new tag is pushed to the repo.
+# You should use an annotated tag, like `git tag -a v1.2.3`
+# and put the release notes into the commit message for the tag.
 name: Release Binary Package
 on:
   push:
     tags:
-      - v*
+      - "v*"
 
 jobs:
-  generate:
-    name: Create release-artifacts
+  build:
     runs-on: ubuntu-latest
     steps:
-      - name: "Checkout the sources"
-        uses: actions/[email protected]
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Mount bazel caches
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/bazel
+          key: bazel-cache-${{ hashFiles('**/BUILD.bazel', '**/*.bzl', 'WORKSPACE', 'WORKSPACE.bzlmod') }}
+          restore-keys: bazel-cache-
       - name: Install JDK 11
         uses: actions/setup-java@v3
         with:
           distribution: "zulu"
           java-version: "11"
-      - name: Setup Bazelisk
-        uses: bazelbuild/setup-bazelisk@v1
-      - name: Mount bazel cache
-        uses: actions/cache@v2
-        with:
-          path: "/home/runner/.cache/bazel"
-          key: caches-${{ runner.os }}-release
-      - name: Build release artifact
-        run: bazelisk build //:rules_kotlin_release
-      - name: Create release sha256
-        run: shasum -a 256 bazel-bin/rules_kotlin_release.tgz > bazel-bin/rules_kotlin_release.tgz.sha256
-      - name: Upload bazel-bin/rules_kotlin_release.tgz
-        uses: svenstaro/[email protected]
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: bazel-bin/rules_kotlin_release.tgz
-          asset_name: rules_kotlin_release.tgz
-          tag: ${{ github.ref }}
-          overwrite: true
-      - name: Upload bazel-bin/rules_kotlin_release.tgz.sha256
-        uses: svenstaro/[email protected]
+      - name: Prepare release notes and artifacts
+        env:
+          # Bazelisk will download bazel to here.
+          XDG_CACHE_HOME: ~/.cache/bazel-repo
+        run: .github/workflows/release_prep.sh ${{ env.GITHUB_REF_NAME }}
+      - name: Release
+        uses: softprops/action-gh-release@v1
         with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: bazel-bin/rules_kotlin_release.tgz.sha256
-          asset_name: rules_kotlin_release.tgz.sha256
-          tag: ${{ github.ref }}
-          overwrite: true
+          prerelease: true
+          # Use GH feature to populate the changelog automatically
+          generate_release_notes: true
+          body_path: release_notes.txt
+          fail_on_unmatched_files: true
+          files: rules_kotlin-*.tar.gz

.github/workflows/release_prep.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -o errexit -o nounset -o pipefail
+
+# Set by GH actions, see
+# https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables
+TAG=${GITHUB_REF_NAME}
+# The prefix is chosen to match what GitHub generates for source archives
+PREFIX="rules_kotlin-${TAG:1}"
+ARCHIVE="rules_kotlin-$TAG.tar.gz"
+bazel --bazelrc=.github/workflows/ci.bazelrc --bazelrc=.bazelrc build //:rules_kotlin_release
+cp bazel-bin/rules_kotlin_release.tgz $ARCHIVE
+SHA=$(shasum -a 256 $ARCHIVE | awk '{print $1}')
+
+# Write the release notes to release_notes.txt
+cat > release_notes.txt << EOF
+# Release notes for $TAG
+## Using Bzlmod with Bazel 6
+
+1. Enable with \`common --enable_bzlmod\` in \`.bazelrc\`.
+2. Add to your \`MODULE.bazel\` file:
+
+\`\`\`starlark
+bazel_dep(name = "rules_kotlin", version = "${TAG:1}")
+\`\`\`
+
+## Using WORKSPACE
+
+Paste this snippet into your \`WORKSPACE.bazel\` file:
+
+\`\`\`starlark
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+http_archive(
+    name = "rules_kotlin",
+    sha256 = "${SHA}",
+    url = "https://github.com/bazelbuild/rules_kotlin/releases/download/${TAG}/${ARCHIVE}",
+)
+EOF