RVM报告未安装Gemfile ruby
在我的Gemfile中，我指定了：
ruby '1.9.3', engine: 'jruby', engine_version: '1.7.9' 但进入我的Rails项目目录会使rvm抛出此错误：
RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too, you can ignore these warnings with 'rvm rvmrc warning ignore /home/petey/rails/kotoba/Gemfile'. To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'. ruby-1.9.3,engine:jruby,engine_version:1.7.9 is not installed. To install do: 'rvm install ruby-1.9.3,engine:jruby,engine_version:1.7.9'
但是，我确实安装了jruby 1.7.9：
$ rvm list rvm rubies jruby-1.7.9 [ x86_64 ] ruby-1.9.3-p392 [ x86_64 ] =* ruby-2.0.0-p247 [ x86_64 ] # => - current # =* - current && default # * - default $ rvm use jruby Using /home/petey/.rvm/gems/jruby-1.7.9 $ ruby -v jruby 1.7.9 (1.9.3p392) 2013-12-06 87b108a on OpenJDK 64-Bit Server VM 1.7.0_25-b30 [linux-amd64]
事实上，我甚至可以选择rvm use jruby和rails工作正常。
Gemfile中的ruby指令有问题吗？
我遵循官方规范 ，其中有一个非常相似的例子。
编辑：运行rvm install ruby-1.9.3,engine:jruby,engine_version:1.7.9在提示符下，rvm继续安装ruby-1.9.3-p484 。 再一次，它在进入项目目录时显示相同的错误消息：
RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too, you can ignore these warnings with 'rvm rvmrc warning ignore /home/petey/rails/kotoba/Gemfile'. To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'. ruby-1.9.3,engine:jruby,engine_version:1.7.9 is not installed. To install do: 'rvm install ruby-1.9.3,engine:jruby,engine_version:1.7.9'
根据这个 SO回答：
RVM对ruby指令的支持有限，您可以使用注释来覆盖RVM将使用的内容。
通过增加：
#ruby=jruby-1.7.9
在ruby指令正下方的Gemfile中，rvm似乎能够选择正确的ruby：
$ cd kotoba RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too, you can ignore these warnings with 'rvm rvmrc warning ignore /home/petey/rails/kotoba/Gemfile'. To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'. $ ruby -v jruby 1.7.9 (1.9.3p392) 2013-12-06 87b108a on OpenJDK 64-Bit Server VM 1.7.0_25-b30 [linux-amd64]