Unable to run buildr on windows

I have Windows XP installed and I am trying to run buildr on it, I have never used Ruby before. I followed instructions on the buildr website, i.e.:

1. Installed Ruby 1.8.6 for windows using Ruby Installer
2. Set JAVA_HOME env variable to point to my JDK
3. Ran the following: gem install buildr --platform mswin32. Seemed to install ok except for error about documentation (don't know if that is important or not):

Fetching: rake-0.8.7.gem (100%)

Fetching: builder-2.1.2.gem (100%)

WARNING: builder-2.1.2 has an invalid nil value for @cert_chain

Fetching: net-ssh-2.0.23.gem (100%)

Fetching: net-sftp-2.0.4.gem (100%)

Fetching: rubyzip-0.9.4.gem (100%)

Fetching: highline-1.5.1.gem (100%)

Fetching: json_pure-1.4.3.gem (100%)

Fetching: rubyforge-2.0.3.gem (100%)

Fetching: hoe-2.3.3.gem (100%)

Fetching: rjb-1.3.2-x86-mswin32-60.gem (100%)

Fetching: atoulme-Antwrap-0.7.1.gem (100%)

Fetching: diff-lcs-1.1.2.gem (100%)

Fetching: rspec-expectations-2.1.0.gem (100%)

Fetching: rspec-mocks-2.1.0.gem (100%)

Fetching: rspec-core-2.1.0.gem (100%)

***************************

Thank you for installing rspec-core-2.1.0

Please be sure to look at the upgrade instructions to see what might have

changed since the last release:

http://github.com/rspec/rspec-core/blob/master/Upgrade.markdown

***************************

Fetching: rspec-2.1.0.gem (100%)

Fetching: xml-simple-1.0.12.gem (100%)

Fetching: minitar-0.5.3.gem (100%)

Fetching: buildr-1.4.6-x86-mswin32.gem (100%)

To get started run buildr --help

Successfully installed rake-0.8.7

Successfully installed builder-2.1.2

Successfully installed net-ssh-2.0.23

Successfully installed net-sftp-2.0.4

Successfully installed rubyzip-0.9.4

Successfully installed highline-1.5.1

Successfully installed json_pure-1.4.3

Successfully installed rubyforge-2.0.3

Successfully installed hoe-2.3.3

Successfully installed rjb-1.3.2-x86-mswin32-60

Successfully installed atoulme-Antwrap-0.7.1

Successfully installed diff-lcs-1.1.2

Successfully installed rspec-expectations-2.1.0

Successfully installed rspec-mocks-2.1.0

Successfully installed rspec-core-2.1.0

Successfully installed rspec-2.1.0

Successfully installed xml-simple-1.0.12

Successfully installed minitar-0.5.3

Successfully installed buildr-1.4.6-x86-mswin32

19 gems installed

Installing ri documentation for rake-0.8.7...

Installing ri documentation for builder-2.1.2...

ERROR: While generating documentation for builder-2.1.2

... MESSAGE:

Unhandled special: Special: type=17, text=""

... RDOC args: --ri --op C:/Ruby187/lib/ruby/gems/1.8/doc/builder-2.1.2/ri --title Builder -- Easy XML Building --main README --line-numbers lib CHANGES Rakefile README doc/releases/builder-1.2.4.rdoc doc/releases/builder-2.0.0.rdoc doc/releases/builder-2.1.1.rdoc --title builder-2.1.2 Documentat开发者_如何学运维ion --quiet

1. Ran buildr --help and got the following error:

C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems.rb:926:in 'report_activate_error': RubyGem version error: buildr(1.4.6 not >= 0) (Gem::LoadError)

from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems.rb:244:in 'activate_dep'

from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems.rb:236:in 'activate'

from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems.rb:1307:in 'gem'

from C:/Ruby187/bin/buildr:18

I tried giving it a version:

buildr _1.4.6 _ --help

But I just got the same error except for:

'report_activate_error': RubyGem version error: buildr(1.4.6 not = 1.4.6) (Gem::LoadError)

Has anyone else encountered this or am I doing something wrong?

thanks

UPDATE: I installed JRuby and that worked for me. Any feedback on the initial issue is appreciated, for now I am going to stick with JRuby.

This is a known issue: https://issues.apache.org/jira/browse/BUILDR-580

The recommendation is not run gem update --system.

I have the same problem on Windows for Standalone and PIK installation.

pik install ruby 1.8.7
-- use it --
gem install buildr --platform mswin32 --no-rdoc --no-ri
C:/Users/yclian/.pik/rubies/Ruby-187-p352@java/lib/ruby/site_ruby/1.8/rubygems.rb:926:in `report_activate_error': RubyGem version error: buildr(1.4.6 not >= 0) (Gem::LoadError)
    from C:/Users/yclian/.pik/rubies/Ruby-187-p352@java/lib/ruby/site_ruby/1.8/rubygems.rb:244:in `activate_dep'
    from C:/Users/yclian/.pik/rubies/Ruby-187-p352@java/lib/ruby/site_ruby/1.8/rubygems.rb:236:in `activate'
    from C:/Users/yclian/.pik/rubies/Ruby-187-p352@java/lib/ruby/site_ruby/1.8/rubygems.rb:1307:in `gem'
    from C:/Users/yclian/.pik/rubies/Ruby-187-p352@java/bin/buildr:18

Like the author said, JRuby is the workaround.

pik install jruby
-- use it --
jruby -S gem install buildr
buildr --help
 buildr [-f rakefile] {options} targets...
-- happy --