# File lib/bundler/gem_helper.rb, line 52
    def install_gem
      built_gem_path = build_gem
      out, _ = sh_with_code("gem install #{built_gem_path}")
      raise "Couldn't install gem, run `gem install #{built_gem_path}' for more detailed output" unless out[/Successfully installed/]
      Bundler.ui.confirm "#{name} (#{version}) installed"
    end