Ruby gem roo error: LoadError: no such file to load — zip/zipfilesystem

ruby-1.9.2-p290 :003 > require ‘roo’
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:6: warning: already initialized constant VERSION
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:7: warning: already initialized constant LIBPATH
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:8: warning: already initialized constant PATH
LoadError: no such file to load — zip/zipfilesystem
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo/openoffice.rb:3:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:71:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from (irb):3
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `’
ruby-1.9.2-p290 :004 >

Instead of roo do

ruby-1.9.2-p290 :004 > require ‘roo/excel’

This works fine. If you want zip gem then install it.

$ gem install rubyzip2

Then do

ruby-1.9.2-p290 :001 > require ‘roo’

=> true