I cannot install Rails 3.0 on my OS X

rubyonrails-talk
1

Hi,

I've upgraded ruby to 1.8.7. But when I tried to install rails 3.0, it said that I need ruby 1.8.7 or higher.

ruby-1.8.7-p248$ ruby -v ruby 1.8.7 (2009-12-24 patchlevel 248) [i686-darwin9.8.0] ruby-1.8.7-p248$ sudo gem install rails --pre ERROR: Error installing rails:   activesupport requires Ruby version >= 1.8.7.

What should I do?

Sam

2

Try installing RVM and though it installing Ruby 1.9.1 or 1.9.2 Ruby 1.9.2 is recommended as of this moment. Works for me ... although I have some issues on the latter steps.

3

It might be possible that you have two versions of ruby and two versions of rubygems. When you run the application the gem installer seems to get the path of the old environment. Try gem env or sudo gem env and see the ruby version and ge path.

When the problem will be solved, I suggest to keep a standard ruby installation in your Mac and use rvm to install other version. I prefer to leave the current system version of Ruby, then I install rvm and I load the ruby version that I want, for instance I have installed ree, jruy, MRI 1.8.7 and 1.9.1.