Introduce Github Action to build Darwin packages.

.github/workflows/darwin_build.yml

@@ -0,0 +1,93 @@
+name: Darwin Package Build
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  LOG_LEVEL: debug
+
+jobs:
+  dist_darwin:
+    runs-on: macos-11
+
+    steps:
+      -
+        name: Select Xcode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '13.2.1'
+
+      - # Reference: https://github.com/actions/checkout#Checkout-multiple-repos-side-by-side
+        name: Download distribution-scripts sources
+        uses: actions/checkout@v4
+        with:
+          path: distribution-scripts
+
+      -
+        name: Download crystal sources
+        uses: actions/checkout@v4
+        with:
+          repository: crystal-lang/crystal
+          path: crystal
+          fetch-tags: true
+          fetch-depth: 0
+
+      -
+        name: Restore Omnibus Dependencies' cache
+        uses: actions/cache@v3
+        with:
+          path: distribution-scripts/omnibus/vendor/bundler
+          key: ${{ runner.os }}-omnibus-bundler-${{ hashFiles('distribution-scripts/omnibus/Gemfile.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-omnibus-bundler-
+            ${{ runner.os }}-
+
+      -
+        name: Install Omnibus Dependencies
+        run: |
+          cd distribution-scripts/omnibus
+          bundle install --path vendor/bundler
+
+      -
+        name: Create build folders
+        run: |
+          sudo mkdir -p /opt/crystal
+          sudo chown $(whoami) /opt/crystal/
+          sudo mkdir -p /var/cache
+          sudo chown $(whoami) /var/cache
+
+      -
+        name: Build Darwin package
+        run: |
+          make -C distribution-scripts/darwin \
+            OMNIBUS_OPTS="--log-level ${{ env.LOG_LEVEL }} --override use_git_caching:false" \
+            CRYSTAL_REPO=$GITHUB_WORKSPACE/crystal \
+            CRYSTAL_SRC=$GITHUB_WORKSPACE/crystal \
+            CRYSTAL_SHA1=master \
+            CRYSTAL_VERSION=1.11.0 \
+            PACKAGE_ITERATION=1 \
+            LLVM_VERSION=15.0.7 \
+            PREVIOUS_CRYSTAL_RELEASE_DARWIN_TARGZ=https://github.com/crystal-lang/crystal/releases/download/1.10.1/crystal-1.10.1-1-darwin-universal.tar.gz
+
+
+      - # Reference: https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#environment-files
+        name: Extract the package name to be used for the artifact name
+        run: |
+          cd distribution-scripts/darwin/build
+          ls -la
+          filename=$(ls -1 crystal-*.tar.gz)
+          echo "ARTIFACT_NAME=${filename%.tar.gz}" >> "$GITHUB_ENV"
+
+      - # When an Artifact is uploaded, all the files are assembled into an immutable Zip archive.
+        # https://github.com/actions/upload-artifact#zip-archives
+        name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ env.ARTIFACT_NAME }}
+          path: distribution-scripts/darwin/build/*
+          retention-days: 1
+          if-no-files-found: error
+          compression-level: 0 # package is already compressed

darwin/Makefile

@@ -11,6 +11,7 @@ FORCE_GIT_TAGGED ?= 1              ## Require build to be based on git tag/branc
 
 PREVIOUS_CRYSTAL_RELEASE_DARWIN_TARGZ ?= ## url to crystal-{version}-{package}-darwin-x86_64.tar.gz
 
+OMNIBUS_OPTS ?=                    ## Build arguments for omnibus command line
 OUTPUT_DIR = build
 
 # mimics the tgz_package.rb version mangling
@@ -65,7 +66,7 @@ endif
 	&& export MACOSX_DEPLOYMENT_TARGET=11.0 \
 	&& export SDKROOT=$(shell xcrun --sdk macosx --show-sdk-path) \
 	&& bundle exec omnibus clean crystal shards \
-	&& bundle exec omnibus build crystal \
+	&& bundle exec omnibus build crystal $(OMNIBUS_OPTS) \
 	&& cp ./pkg/$(DARWIN_NAME) $(CURDIR)/$(OUTPUT_DIR)/$(subst x86_64,universal,$(DARWIN_NAME)) \
 	&& cp ./pkg/$(DARWIN_PKG_NAME) $(CURDIR)/$(OUTPUT_DIR)/$(subst x86_64,universal,$(DARWIN_PKG_NAME))