require 'bundler' Bundler::GemHelper.install_tasks module Bundler class GemHelper # override in order to see install output (we have a post-install hook) def install_gem built_gem_path = build_gem out, err, code = sh_with_code("gem install #{built_gem_path}") puts out raise err if err[/ERROR/] Bundler.ui.confirm "#{name} (#{version}) installed" end end end