无法激活机架（〜> 1.4.0，运行时间）已激活rack-1.5.0 [英] Can't activate rack (~> 1.4.0, runtime) already activated rack-1.5.0

问题描述

我了解正在发生的冲突，而且我应该只是为了解决这个问题。卸载我不需要的Rack版本，但是这是事情。我正在开发Koding（ http://koding.com ），并且我无权访问系统级宝石。

Rails之前工作过，我安装了mongo gem，删除了它，并安装了mysql2 gem。

  bash4.1 $ rails 
 /usr/lib/ruby/site_ruby/1.8/rubygems.rb:233:in`activate'：无法激活机架（〜> 1.4。 0，runtime）for [actionpack-3.2.11，railties-3.2.11
]，已经为[rack-ssl-1.3.2，railties-3.2激活rack-1.5.0从/usr/lib/ruby/site_ruby/1.8/rubygems.rb:249:in`activate'
 from / usr / lib / ruby​​ / site_ruby / 1.8 / ruby​​gems.rb：248：在`每个'
 /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in`activate'
从/ usr / lib / ruby​​ / site_ruby / 1.8 / ruby​​gems.rb：249：在`activate'中
 from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in`each'
 from / usr / lib / ruby / site_ruby / 1.8 / ruby​​gems.rb：248：在`activate'
从/ usr /lib/ruby/site_ruby/1.8/rubygems.rb:1082:in从/ usr / bin / rails获得`
：18 
  

我已经擦干净了我的目录，尝试使用RVM，但仍然没有任何结果。任何想法？

感谢！

解决方案

使用Bundler解析根据应用程序Gemfile的机架依赖性。

  $ bundle exec rails 
  

否则，请删除Rack 1.5.0并重试。

  $宝石卸载机架
＃选择正确的版本删除
  

I've been looking for an answer to this for over a day now, and searched StackOverflow thoroughly.

I understand the conflict that's happening, and I should just uninstall the version of Rack I don't need, but here's the thing. I'm developing on Koding (http://koding.com) and I don't have access to system level gems.

Rails was working before, I installed the mongo gem, removed it, and installed mysql2 gem.

bash4.1$ rails
/usr/lib/ruby/site_ruby/1.8/rubygems.rb:233:in `activate': can't activate rack (~> 1.4.0, runtime) for ["actionpack-3.2.11", "railties-3.2.11"
], already activated rack-1.5.0 for ["rack-ssl-1.3.2", "railties-3.2.11"] (Gem::LoadError)
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:249:in `activate'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `each'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `activate'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:249:in `activate'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `each'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `activate'
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `
from /usr/bin/rails:18

I've wiped my directory clean, tried using RVM, and still nothing. Any ideas?

Thanks!

解决方案

Use Bundler to resolve the Rack dependency according to the app Gemfile.

$ bundle exec rails

Otherwise, delete Rack 1.5.0 and retry.

$ gem uninstall rack
# select the proper version to delete

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