Cannot install Redmine on Mac

I am trying to get Redmine to install on my MacBook Pro (Lion). I've installed XAMPP. Also, as far as I understand, I've installed all the correct versions of required software for Redmine.

However I cannot get rake -v to return expected results. I suspect there maybe gem dependencies which are broken. This is my first attempt at doing anything that has to do something with Ruby.

Is there a way automatically detect and fix gem dependencies.

Update: Complete dump of what I get when I execute rake -v: http://pastebin.com/cuksWp8H

Essentially I keep getting the following:

MBP:redmine-1.2.1 username$ rake -v
(in /Users/username/Sites/redmine-1.2.1)
NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
Gem.source_index called from /Users/username/Sites/redmine-1.2.1开发者_运维知识库/config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21.

You probably want to use rake --version as the -v parameter stands for verbose. You notice in your long trace, that it tries to execute the test suite rather than just outputting the version.

Also — and this is most probably the cause for your issues — Redmine currently requires an older version of rubygems. As standed on RedmineInstall:

Rails 2.3.11 will fail with RubyGems 1.7.0 or later, stick to previous versions of RubyGems !

And finally, Redmine doesn't use bundler (but ChiliProject does) so any bundler issues or fixes do not apply here.

Disclosure: I'm a ChiliProject developer.