问题

使用 mina deploy 的时候，出现找不到 Gem 的问题

$ mina deploy
-----> Using RVM environment 'ruby-2.1.0@default'
       Using /home/deploy/.rvm/gems/ruby-2.1.0
-----> Creating a temporary build path
-----> Fetching new git commits
-----> Using git branch 'master'
       Cloning into '.'...
       done.
-----> Using this git commit

       tony (e60b9b8):
       > change sources

-----> Symlinking shared paths
-----> Installing gem dependencies using Bundler
       Fetching gem metadata from http://rubygems.org/.........
       Fetching additional metadata from http://rubygems.org/..
       Using rake (10.3.2)
       Using i18n (0.6.11)

       Bundler::GemNotFound: Could not find json-1.8.1.gem for installation
       An error occurred while installing json (1.8.1), and Bundler cannot continue.
       Make sure that `gem install json -v '1.8.1'` succeeds before bundling.
 !     ERROR: Deploy failed.
-----> Cleaning up build
       Unlinking current
       OK

 !     Command failed.
       Failed with status 19

解决方案

方案出处 stackoverflow

• update rvm

  rvm get head
  

• 用 rvm 重新安装 ruby 2.1.0

  rvm reinstall 2.1.0 --disable-binary
  

扩展提问

请问，有没有不需要重新 install 的方法，感觉是依赖关系出了问题