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How does one control which Ruby a gem is installed to using rbenv? Or could there be a central place accessible to all Rubies? I am just running Ruby scripts not Rails. rbenv-gemset seems to be for that?

Andrew Marshall
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Greg
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2 Answers2

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The gem is installed into whatever your currently selected Ruby is. E.g.

rbenv shell 2.0.0-p247
gem install bundler  # bundler is installed for Ruby 2.0.0-p247 only
rbenv shell 1.9.3-p447
gem install bundler  # bundler is installed for Ruby 1.9.3-p447 only
Andrew Marshall
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  • Thank you. And your example suggests that I can just change the shell to make those changes. I didn't want to change the global Ruby to install. And further your example suggest that bundler only works on the Ruby you're working in. I hadn't looked at bundler, but since it manages Rubies, I thought that might be the way to go, but seems not for my non-Rails use. – Greg Jul 11 '13 at 16:43
  • Bundler does not manage Ruby versions, it manages gem dependencies. – Andrew Marshall Jul 11 '13 at 22:43
  • Thanks again. That's kind of what I thought. I'm still having trouble with installing to system and 1.8.7. Need to spend some time seeing what is where because I install a gem and then it's not available. – Greg Jul 12 '13 at 17:28
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Just to add on: rbenv-gemset would be for organizing your gems within the same ruby version. Only rbenv controls which ruby you install your gems to...

Jeffrey 'jf' Lim
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