Groovy SSH on Homebrew

GroovySsh.rb

class GroovySsh < Formula
  homepage "https://github.com/int128/groovy-ssh"
  url "https://github.com/int128/groovy-ssh/releases/download/v1.1.3/groovy-ssh.jar"
  version "1.1.3"
  sha1 "2674602e2c966893eecafa75a9ec38bf46d8f392"

  head "https://github.com/int128/groovy-ssh.git"

  depends_on :java => "1.6+"

  def install
    if build.head?
      system "./gradlew", "shadowJar"
      libexec.install "build/libs/groovy-ssh.jar"
    else
      libexec.install "groovy-ssh.jar"
    end
    bin.write_jar_script libexec/"groovy-ssh.jar", "groovy-ssh"
  end

  test do
    system "groovy-ssh"
  end
end