Error installing Rails 4.0.0 with Ruby 2

Question

Using OS X 10.8.4

Seems to work ok with ruby 1.9.3.

$ rvm -v    
rvm 1.20.9 (master) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]

$ ruby -v
ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin12.2.0]

$ gem install rails --version 4.0.0 --no-ri --no-rdoc
ERROR:  While executing gem ... (NoMethodError)
    undefined method `pry' for #<Binding:0x007fa75a9a6268>

So I took a look at pry:

$ gem install pry
ERROR:  While executing gem ... (NoMethodError)
    undefined method `pry' for #<Binding:0x007f8dac196450>

Not sure what to do here...

Answer 1

I couldn't get it to work without rvm.

I followed these instructions and built/installed ruby 2 through rvm, then rails installed cleanly.

http://www.interworks.com/blogs/ckaukis/2013/03/05/installing-ruby-200-rvm-and-homebrew-mac-os-x-108-mountain-lion

Answer 2

It looks like something in your environment requires the pry gem to be installed, do you have a custom .irbrc file in your home directory?

Installing the pry gem (i.e. gem install pry) should fix this for you.