在安装了以下工具的 Mac OS X 系统 (10.8.2) 上：
- Ruby，1.9.3p362（2012-12-25 修订版 38607）[x86_64-darwin12.2.0]，通过 brew
- 捆绑器，1.2.3 通过
gem install bundler - 耙子，10.0.3 通过
gem install rake
无法从源代码构建 Ember。以下是运行时的错误日志rake dist：
± ~/dev/ember.js (master ✓) ⚡ rake dist
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25: warning: redundant nested repeat operator
rake aborted!
cannot load such file -- bundler/setup
/Users/foo/dev/ember.js/Rakefile:3:in `<top (required)>'
(See full trace by running task with --trace)
± ~/dev/ember.js (master ✓) ⚡ rake dist --trace
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25: warning: redundant nested repeat operator
rake aborted!
cannot load such file -- bundler/setup
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/Users/foo/dev/ember.js/Rakefile:3:in `<top (required)>'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load_rakefile'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:583:in `raw_load_rakefile'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:89:in `block in load_rakefile'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:88:in `load_rakefile'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:72:in `block in run'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/usr/local/Cellar/ruby/1.9.3-p362/lib/ruby/gems/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/usr/local/Cellar/ruby/1.9.3-p362/bin/rake:23:in `load'
/usr/local/Cellar/ruby/1.9.3-p362/bin/rake:23:in `<main>'
从#emberjs 中查看Ember Data 构建说明和讨论来看，您似乎需要先运行bundle。这样做会成功安装一些捆绑包，尽管最后会提示输入管理员密码“将捆绑的 RubyGems 安装到您的系统”。
如果您随后运行此命令以查看安装了哪些 gem，您可以看到一个 gem 特别拒绝安装。按照建议运行bundle install并不能解决这个问题。
± ~/dev/ember.js (master ✓) ⚡ bundle exec rake -T
https://github.com/pangratz/github_downloads.git (at master) is not checked out. Please run `bundle install`
Twitter 的一个建议是运行bundle rake dist. 这会产生：
± ~/dev/ember.js (master ✓) ⚡ bundle rake dist
Could not find task "rake".
另一个用于bundle exec rake dist：
± ~/dev/ember.js (master ✓) ⚡ bundle exec rake dist
https://github.com/pangratz/github_downloads.git (at master) is not checked out. Please run `bundle install`
此时运行bundle install会安装 gems 列表，但最后会要求输入管理员密码并报告成功。#emberjs 的一个想法是，这意味着它将 gems 安装到我的系统中，而不是沙盒环境中，这才是真正的问题。
可以做些什么来克服这个 bundle/rake 错误？