class Bundler::Dsl

def gem(name, *args)
  options = Hash === args.last ? args.pop : {}
  version = args.last || ">= 0"
  if group = options[:groups] || options[:group]
    options[:group] = group
  end
  _deprecated_options(options)
  _normalize_options(name, version, options)
  @dependencies << Dependency.new(name, version, options)
end