Running Jekyll on Mavericks with latest command line tools error

Question

I'm trying to install Jekyll and keep running into issues. I'm on OSX 10.9.2, using ruby 2.1.1p76 I'm getting the following errors:

jekyll
/Library/Ruby/Site/1.8/rubygems/ext/builder.rb:12: uninitialized constant Gem::UserInteraction (NameError)
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Site/1.8/rubygems/ext.rb:13
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:1431:in `build_extensions'
    from /Library/Ruby/Site/1.8/rubygems/basic_specification.rb:56:in `contains_requirable_file?'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:915:in `find_by_path'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `find'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:883:in `each'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:882:in `each'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:914:in `find'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:914:in `find_by_path'
    from /Library/Ruby/Site/1.8/rubygems.rb:188:in `try_activate'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:132:in `require'
    from /Library/Ruby/Site/1.8/rubygems/user_interaction.rb:8
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Site/1.8/rubygems/config_file.rb:7
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:1430:in `build_extensions'
    from /Library/Ruby/Site/1.8/rubygems/basic_specification.rb:56:in `contains_requirable_file?'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:915:in `find_by_path'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `find'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:883:in `each'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:882:in `each'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:914:in `find'
    from /Library/Ruby/Site/1.8/rubygems/specification.rb:914:in `find_by_path'
    from /Library/Ruby/Site/1.8/rubygems.rb:188:in `try_activate'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:132:in `require'
    from /Library/Ruby/Gems/1.8/gems/highline-1.6.21/lib/highline/system_extensions.rb:143
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/highline-1.6.21/lib/highline.rb:14
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/highline-1.6.21/lib/highline/import.rb:8
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/commander-4.1.6/lib/commander.rb:24
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/commander-4.1.6/lib/commander/import.rb:2
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/jekyll-1.4.3/bin/jekyll:6
    from /usr/bin/jekyll:23:in `load'
    from /usr/bin/jekyll:23

Does have any suggestions on things I could try in order to successfully install Jekyll?

Answer 1

You said that you are trying to use ruby 2.1.1. but your log show us ruby 1.8.7.

With that in mind, it seems that you have 2 rubies installed on your machine... ruby 1.8.7 installed by homebrew, and ruby 2.1.1 installed by rvm.

And apparently you also have jekyll installed on ruby 1.8.7 gemset...

So, I recommend you to do that:

gem uninstall jekyll

rvm use 2.1.1

gem install jekyll