livecheck do
    url "https://software.xamarin.com/Service/Updates?v=2&pv0ab364ff-c0e9-43a8-8747-3afb02dc7731=0"
    regex(%r{/download/pr/([^/]+)/([^/]+)/xamarin[._-]mac[._-]v?(\d+(?:\.\d+)+)\.pkg}i)
    strategy :page_match do |page, regex|
      page.scan(regex).map do |match|