class Bundler::Dsl

def gemspec(opts = nil)
  path              = opts && opts[:path] || "."
  glob              = opts && opts[:glob]
  name              = opts && opts[:name] || "{,*}"
  development_group = opts && opts[:development_group] || :development
  expanded_path     = File.expand_path(path, Bundler.default_gemfile.dirname)
  gemspecs = Dir[File.join(expanded_path, "#{name}.gemspec")]
  case gemspecs.size
  when 1
    spec = Bundler.load_gemspec(gemspecs.first)
    unless spec
      raise InvalidOption, "There was an error loading the gemspec at " \
        "#{file}. Make sure you can build the gem, then try again"
    end
    gem spec.name, :path => path, :glob => glob, :platforms => Bundler::Dependency::REVERSE_PLATFORM_MAP[spec.platform]
    group(development_group) do
      spec.development_dependencies.each do |dep|
        gem dep.name, *(dep.requirement.as_list + [:type => :development])
      end
    end
    @gemspecs << gemspecs.first
  when 0
    raise InvalidOption, "There are no gemspecs at #{expanded_path}"
  else
    raise InvalidOption, "There are multiple gemspecs at #{expanded_path}. " \
      "Please use the :name option to specify which one should be used"
  end
end