ruby-on-rails – 安装Rails 4.2.0.beta1 – 在排序期间找到未解决的依赖项

我试图安装Rails 4.2.0.beta1( released Aug 20,2014).我收到错误“在排序期间找到未解决的依赖项”.以下是详细信息：

$ruby -v
ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-darwin13.0]
$gem -v
2.4.1
$gem install rails --pre
ERROR:  While executing gem ... (Gem::DependencyError)
    Unresolved dependency found during sorting - activesupport (>= 4.0)
(requested by sprockets-rails-3.0.0.beta1)

如何安装Rails 4.2.0.beta1？

解决方法

这个问题已在RubyGems上修复.升级到至少2.4.4

有关更多信息,请查看this GitHub issue.