想跑个 Rails 后台的项目，Gemfile 是这样的：https://github.com/paulmillr/ostio-api/blob/master/Gemfile 我看到有 Gemfile, 于是用 bundle install 来安装依赖. 环境是 Archlinux, Ruby 是通过 yaourt 直接安装的，bundle 通过 gem install 安装 修改了 source 到镜像，然后跑命令出错了

➤➤ ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-linux]
➤➤ gem -v
2.0.0
➤➤ bundle install
Fetching source index from http://ruby.taobao.org/
Using rake (10.0.3) 
Using i18n (0.6.1) 
Using multi_json (1.5.0) 
Using activesupport (3.2.11) 
Using builder (3.0.4) 
Using activemodel (3.2.11) 
Using erubis (2.7.0) 
Using journey (1.0.4) 
Using rack (1.4.3) 
Using rack-cache (1.2) 
Using rack-test (0.6.2) 
Using hike (1.2.1) 
Using tilt (1.3.3) 
Using sprockets (2.2.2) 
Using actionpack (3.2.11) 
Installing mime-types (1.19) 
Errno::ENOENT: No such file or directory - /usr/lib/ruby/gems/2.0.0/build_info/mime-types-1.19.info
An error occurred while installing mime-types (1.19), and Bundler cannot continue.
Make sure that `gem install mime-types -v '1.19'` succeeds before bundling.

第一次是在 rake 的安装过程出错.. 然后是按顺序那些包 我依照提示手动 gem install rake 了几个包.. 结果数量好大.. 比如 gem install actionpack -v 3.2.11 安装是能成功的， 但在 bundle install 的时候就是会出错，, 大概像上边这样 -V 的 log: https://gist.github.com/jiyinyiyong/5762608 为什么前者正常而 bundle 会出错呢？