chore: automatically release brew for both ARM and AMD builds

Brings the template into the garden repo so any changes to the process only need to go through here and will always be consistent.

.github/workflows/reusable-create-homebrew-pr.yml

@@ -22,29 +22,82 @@ permissions:
   contents: read
 
 jobs:
+  fetch-release-checksums:
+    runs-on: ubuntu-latest
+    env:
+      ARM_TARBALL_URL: https://download.garden.io/core/${{ inputs.release-version }}/garden-${{ inputs.release-version }}-macos-arm64.tar.gz
+      AMD_TARBALL_URL: https://download.garden.io/core/${{ inputs.release-version }}/garden-${{ inputs.release-version }}-macos-amd64.tar.gz
+    outputs:
+      arm-sha256: ${{ steps.fetch-arm-sha256.outputs.sha256 }}
+      amd-sha256: ${{ steps.fetch-amd-sha256.outputs.sha256 }}
+      arm-tarball-url: ${{ env.ARM_TARBALL_URL }}
+      amd-tarball-url: ${{ env.AMD_TARBALL_URL }}
+    steps:
+      - name: Fetch arm sha256
+        id: fetch-arm-sha256
+        if: inputs.release-condition != 'false'
+        run: |
+          echo "sha256=$(curl -sSL ${{ env.ARM_TARBALL_URL }} | shasum -a 256 | cut -d ' ' -f 1)" >> "$GITHUB_OUTPUT"
+      - name: Fetch amd sha256
+        id: fetch-amd-sha256
+        if: inputs.release-condition != 'false'
+        run: |
+          echo "sha256=$(curl -sSL ${{ env.AMD_TARBALL_URL }} | shasum -a 256 | cut -d ' ' -f 1)" >> "$GITHUB_OUTPUT"
+
   homebrew-create-pr:
     runs-on: macos-latest
-
+    needs: fetch-release-checksums
     steps:
       - name: Checks release pre-condition
         if: inputs.release-condition == 'false'
         run: |
           echo The release-condition evaluated to false.
           echo Skipping all the next steps.
-      - name: Create PR on Homebrew Formula repository
+
+      - name: Checkout garden repo
         if: inputs.release-condition != 'false'
-        uses: stefreak/bump-homebrew-formula-action@82352c3cbbc2acdec5a064502447b555f18496fc
+        uses: actions/checkout@v4
         with:
-          tag-name: ${{ inputs.release-version }}
-          formula-name: garden-cli
-          formula-path: Formula/garden-cli.rb
-          homebrew-tap: garden-io/homebrew-garden
-          base-branch: main
-          create-pullrequest: true
-          download-url: https://download.garden.io/core/${{ inputs.release-version }}/garden-${{ inputs.release-version }}-macos-amd64.tar.gz
+          repository: garden-io/garden
+          ref: main
+          path: garden
+          token: ${{ secrets.COMMITTER_TOKEN }}
+
+      - name: Checkout homebrew repo
+        if: inputs.release-condition != 'false'
+        uses: actions/checkout@v4
+        with:
+          repository: garden-io/homebrew-garden
+          ref: main
+          path: homebrew-garden
+          token: ${{ secrets.COMMITTER_TOKEN }}
+
+      - name: Template Homebrew Formula
+        if: inputs.release-condition != 'false'
+        uses: cuchi/[email protected]
+        with:
+          template: garden/support/homebrew-formula.rb.j2
+          output_file: homebrew-garden/Formula/garden-cli.rb
+          strict: true
+          variables: |
+            version=${{ inputs.release-version }}}
+            armTarballUrl=${{ needs.fetch-release-checksums.outputs.arm-tarball-url }}
+            amdTarballUrl=${{ needs.fetch-release-checksums.outputs.amd-tarball-url }}
+            armSha256=${{ needs.fetch-release-checksums.outputs.arm-sha256 }}
+            amdSha256=${{ needs.fetch-release-checksums.outputs.amd-sha256 }}
+      
+      - name: Create PR on Homebrew Repository
+        if: inputs.release-condition != 'false'
+        uses: peter-evans/create-pull-request@v5
+        with:
+          path: homebrew-garden
+          token: ${{ secrets.COMMITTER_TOKEN }}
           commit-message: ${{ inputs.commit-message }}
-        env:
-          COMMITTER_TOKEN: ${{ secrets.COMMITTER_TOKEN }}
+          title: Bump garden-cli to ${{ inputs.release-version }}
+          body: ${{ inputs.commit-message}}
+          branch: garden-cli-${{ inputs.release-version }}
+          reviewers: ${{ github.triggering_actor }}
+
       - name: Adding markdown summary
         if: inputs.release-condition != 'false'
         run: |

support/homebrew-formula.rb → support/homebrew-formula.rb.j2

@@ -1,9 +1,17 @@
 class GardenCli < Formula
   desc "Development engine for Kubernetes"
   homepage "https://garden.io"
-  url "{{{tarballUrl}}}"
+
   version "{{version}}"
-  sha256 "{{sha256}}"
+
+  # Determine architecture
+  if Hardware::CPU.arm?
+    url "{{armTarballUrl}}"
+    sha256 "{{armSha256}}"
+  else
+    url "{{amdTarballUrl}}"
+    sha256 "{{amdSha256}}"
+  end
 
   def install
     libexec.install "garden", "fsevents.node", "static", "pty.node"