dsl.rb

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