brew m2 build.yaml

- job: homebrew_template
  dependsOn: multi_build
  steps:
  - task: DownloadBuildArtifacts@0
  # https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/utility/download-build-artifacts
    inputs:
      buildType: current
      downloadType: specific
  - script: |
      osxhash=`shasum -a 256 $osxpkg | cut -d " " -f 1`
      cat <<EOF >unison-language.rb
      class UnisonLanguage < Formula
        desc "The Unison Language and Codebase Manager."
        homepage "https://unisonweb.org"
        version "1.0.$version"
        url "https://github.com/unisonweb/unison/releases/download/release%2F$version/unison-osx.tar.gz"
        sha256 "$osxhash"

        def install
          opt_prefix.install Dir["*"]
          bin.install_symlink opt_prefix/"ucm"
        end

        test do
          system "ucm"
        end
      end
      EOF
      cat unison-language.rb
    env:
      version:  $(Build.SourceBranchName)
      linuxpkg: $(System.ArtifactsDirectory)/drop/unison-linux64.tar.gz
      osxpkg:   $(System.ArtifactsDirectory)/drop/unison-osx.tar.gz
    displayName: generate unison-language.rb
  - script: |
      git clone https://aryairani:$(ghtoken)@github.com/unisonweb/homebrew-unison.git
      pushd homebrew-unison
      tag=release/$(Build.SourceBranchName)
      cp ../unison-language.rb .
      git add unison-language.rb
      git config user.email "[email protected]"
      git config user.name "azure pipeline"
      git commit -m"update to $tag"
      git push origin HEAD:master || \
        (git push origin HEAD:$tag && \
         echo "##vso[task.logissue type=warning;]couldn't push to master; pushed to $tag instead.")
    displayName: commit unison-language.rb