install_package (Merb::RakeHelper)

    # File lib/merb-core/tasks/merb_rake_helper.rb, line 21
        def self.install_package(pkg, options = {})
          defaults = { :cache => false }
          defaults[:install_dir] = ENV['GEM_DIR'] if ENV['GEM_DIR']
          opts = defaults.merge(options)
          # Needs to be executed from the directory that contains all packages
          Dir.chdir(File.dirname(pkg_file = File.expand_path(pkg))) do
            install_gem(pkg_file, opts)
          end
          name = File.basename(pkg, '.gem')[/^(.*?)-([\d\.]+)$/, 1]
          ensure_wrapper(opts[:install_dir] || Gem.default_dir, name)
        end