maybe
http://blog.mkristian.tk/2010/03/riding-ruby-on-rails3-with-maven.html
is of interest to you.

regards, Kristian

On Thu, Jan 20, 2011 at 1:37 AM, Rodrigo Rosenfeld Rosas
<rr.ro...@gmail.com> wrote:
>  Hi Kristian, thank you for your replay. Actually, I'm not depending on this
> feature yet, but I was just testing it since it'll be a great feature if we
> decide to move from Grails to JRuby on Rails. This feature would be an extra
> point of argumentation while trying to convince the person that can take
> this decision, since we depend on lots of libraries that are already
> available on Maven and Grails has a syntax for declaring dependencies on
> Maven. Being able to use Bundler to manage the Maven dependencies would be
> awesome!
>
> So, this is not urgent. When I have some free time I'll try to investigate
> more this new feature issue.
>
> Best regards,
>
> Rodrigo.
>
> Em 19-01-2011 17:59, kristian escreveu:
>>
>> then I got the current head from git and it worked for me.
>>
>> if I look at the stacktrace it seems that the uri.path is nil.
>>
>> could it be an issue related to 'rvm'  - but I doubt ?
>>
>> there are some patches on the way related to maven_gems, maybe it is
>> worth waiting for them before investing further !?
>>
>> regards, Kristian
>>
>> On Wed, Jan 19, 2011 at 7:26 PM, Rodrigo Rosenfeld Rosas
>> <rr.ro...@gmail.com>  wrote:
>>>
>>> I've just 'rvm install jruby-head' and yielded 'gem install ruby-maven
>>> --pre', 'gem install postgresql:postgresql' and got the following error:
>>>
>>> ERROR:  While executing gem ... (TypeError)
>>>     can't convert nil into String
>>>
>>> gem install postgresql:postgresql -V --backtrace
>>>
>>> ERROR:  While executing gem ... (TypeError)
>>>     can't convert nil into String
>>>         org/jruby/RubyFile.java:960:in `dirname'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:62:in
>>> `cache_dir'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:105:in
>>> `fetch_spec'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:75:in
>>> `fetch_with_errors'
>>>         org/jruby/RubyArray.java:2471:in `collect19'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:74:in
>>> `fetch_with_errors'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:108:in
>>> `find_gems_with_sources'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:212:in
>>> `find_spec_by_name_and_version'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:244:in
>>> `install'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:120:in
>>> `execute'
>>>         org/jruby/RubyArray.java:1671:in `each'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in
>>> `execute'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in
>>> `invoke'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:134:in
>>> `process_args'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:104:in
>>> `run'
>>>
>>>
>>> /home/rodrigo/.rvm/rubies/jruby-head/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:63:in
>>> `run'
>>>         /home/rodrigo/.rvm/rubies/jruby-head/bin/gem:25:in `__file__'
>>>
>>> Any hints?
>>>
>>> Thanks in advance,
>>>
>>> Rodrigo
>>>
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