class Bundler::CLI::Platform

def run
  platforms, ruby_version = Bundler.ui.silence do
    locked_ruby_version = Bundler.locked_gems && Bundler.locked_gems.ruby_version&.gsub(/p\d+\Z/, "")
    gemfile_ruby_version = Bundler.definition.ruby_version && Bundler.definition.ruby_version.single_version_string
    [Bundler.definition.platforms.map {|p| "* #{p}" },
     locked_ruby_version || gemfile_ruby_version]
  end
  output = []
  if options[:ruby]
    if ruby_version
      output << ruby_version
    else
      output << "No ruby version specified"
    end
  else
    output << "Your platform is: #{Gem::Platform.local}"
    output << "Your app has gems that work on these platforms:\n#{platforms.join("\n")}"
    if ruby_version
      output << "Your Gemfile specifies a Ruby version requirement:\n* #{ruby_version}"
      begin
        Bundler.definition.validate_runtime!
        output << "Your current platform satisfies the Ruby version requirement."
      rescue RubyVersionMismatch => e
        output << e.message
      end
    else
      output << "Your Gemfile does not specify a Ruby version requirement."
    end
  end
  Bundler.ui.info output.join("\n\n")
end