gemspec

# File lib/bundler/dsl.rb, line 58
    def gemspec(opts = nil)
      opts ||= {}
      path              = opts[:path] || "."
      glob              = opts[:glob]
      name              = opts[:name]
      development_group = opts[:development_group] || :development
      expanded_path     = gemfile_root.join(path)

      gemspecs = Dir[File.join(expanded_path, "{,*}.gemspec")].map {|g| Bundler.load_gemspec(g) }.compact
      gemspecs.reject! {|s| s.name != name } if name
      Index.sort_specs(gemspecs)
      specs_by_name_and_version = gemspecs.group_by {|s| [s.name, s.version] }

      case specs_by_name_and_version.size
      when 1
        specs = specs_by_name_and_version.values.first
        spec = specs.find {|s| s.match_platform(Bundler.local_platform) } || specs.first

        @gemspecs << spec

        gem_platforms = Bundler::Dependency::REVERSE_PLATFORM_MAP[Bundler::GemHelpers.generic_local_platform]
        gem spec.name, :name => spec.name, :path => path, :glob => glob, :platforms => gem_platforms

        group(development_group) do
          spec.development_dependencies.each do |dep|
            gem dep.name, *(dep.requirement.as_list + [:type => :development])
          end
        end
      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