class PhusionPassenger::Config::CompileNginxEngineCommand

def sanity_check
  return if @options[:force]
  if PhusionPassenger.find_support_binary("nginx-#{@options[:nginx_version]}")
    puts "#{@colors.green}The Nginx engine (version #{@options[:nginx_version]}) " +
      "is already installed.#{@colors.reset}"
    if @options[:force_tip]
      puts "If you want to recompile it, re-run this program with the --force parameter."
    end
    exit
  end
end