class Bundler::Bundle

def cleanup(valid, options)
  to_delete = gems
  to_delete.delete_if do |spec|
    valid.any? { |other| spec.name == other.name && spec.version == other.version }
  end
  valid_executables = valid.map { |s| s.executables }.flatten.compact
  to_delete.each do |spec|
    Bundler.logger.info "Deleting gem: #{spec.name} (#{spec.version})"
    cleanup_spec(spec)
    # Cleanup the bin directory
    spec.executables.each do |bin|
      next if valid_executables.include?(bin)
      Bundler.logger.info "Deleting bin file: #{bin}"
      FileUtils.rm_rf(bindir.join(bin))
    end
  end
end