README

It's a closed source Rails (2.3.5) app, I patched `config/boot.rb` and `config/preinitializer.rb` as explained on http://gembundler.com/rails23.html

Gemfile

source 'http://rubygems.org'

gem 'rails', '2.3.5'

gem 'mysql'
gem 'authlogic', '2.1.3'
gem 'bitly', '0.4.0'
gem 'delayed_job'
gem 'paperclip', '2.3.1.1'
gem 'delayed_paperclip', '0.5.1'
gem 'geokit', '1.5.0'
gem 'json_pure', '1.2.0'
gem 'newrelic_rpm', '2.10.5'
gem 'oauth', '0.3.6'
gem 'rack-contrib', '0.9.2', :require => 'rack/contrib'
gem 'rack-oauth', '0.1.5'
gem 'raspell', '1.1'
gem 'uniquify', '0.1.0'
gem 'thinking-sphinx', '1.3.15', :require => 'thinking_sphinx'
gem 'thinking-sphinx-raspell', '1.1.1', :require => 'thinking_sphinx/raspell'
gem 'twitter', '0.8.6'

group :development do
  gem 'ruby-debug'
end

group :test do
  gem 'rspec', '1.3.0', :require => 'spec'
  gem 'rspec-rails', '1.3.0', :require => 'spec/rails'
  gem 'factory_girl'
  gem 'selenium-client', '1.2.18', :require => 'selenium/client'
  gem 'webrat', '0.7.1'
end

Gemfile.lock

GEM
  remote: http://rubygems.org/
  specs:
    actionmailer (2.3.5)
      actionpack (= 2.3.5)
    actionpack (2.3.5)
      activesupport (= 2.3.5)
      rack (~> 1.0.0)
    activerecord (2.3.5)
      activesupport (= 2.3.5)
    activeresource (2.3.5)
      activesupport (= 2.3.5)
    activesupport (2.3.5)
    after_commit (1.0.7)
      activerecord
    authlogic (2.1.3)
      activesupport
    bitly (0.4.0)
      crack (>= 0.1.1)
    columnize (0.3.1)
    crack (0.1.8)
    daemons (1.1.0)
    delayed_job (2.0.3)
      daemons
    delayed_paperclip (0.5.1)
      paperclip (>= 2.3.0)
    factory_girl (1.3.1)
    geokit (1.5.0)
    hashie (0.1.8)
    httparty (0.6.1)
      crack (= 0.1.8)
    json_pure (1.2.0)
    linecache (0.43)
    mysql (2.8.1)
    newrelic_rpm (2.10.5)
    nokogiri (1.4.2)
    oauth (0.3.6)
      ruby-hmac (>= 0.3.1)
    paperclip (2.3.1.1)
    rack (1.0.1)
    rack-contrib (0.9.2)
      rack (>= 0.9.1)
      test-spec (~> 0.9.0)
    rack-oauth (0.1.5)
      oauth
      rack
    rack-test (0.5.4)
      rack (>= 1.0)
    rails (2.3.5)
      actionmailer (= 2.3.5)
      actionpack (= 2.3.5)
      activerecord (= 2.3.5)
      activeresource (= 2.3.5)
      activesupport (= 2.3.5)
      rake (>= 0.8.3)
    rake (0.8.7)
    raspell (1.1)
    riddle (1.0.12)
    rspec (1.3.0)
    rspec-rails (1.3.0)
      rack (>= 1.0.0)
      rspec (>= 1.3.0)
    ruby-debug (0.10.3)
      columnize (>= 0.1)
      ruby-debug-base (~> 0.10.3.0)
    ruby-debug-base (0.10.3)
      linecache (>= 0.3)
    ruby-hmac (0.4.0)
    selenium-client (1.2.18)
    test-spec (0.9.0)
    thinking-sphinx (1.3.15)
      activerecord (>= 1.15.6)
      after_commit (>= 1.0.5)
      riddle (>= 1.0.9)
    thinking-sphinx-raspell (1.1.1)
      raspell (>= 1.1)
      thinking-sphinx (>= 1.2.12)
    twitter (0.8.6)
      hashie (~> 0.1.3)
      httparty (>= 0.5.2)
      oauth (~> 0.3.6)
    uniquify (0.1.0)
    webrat (0.7.1)
      nokogiri (>= 1.2.0)
      rack (>= 1.0)
      rack-test (>= 0.5.3)

PLATFORMS
  ruby

DEPENDENCIES
  authlogic (= 2.1.3)
  bitly (= 0.4.0)
  delayed_job
  delayed_paperclip (= 0.5.1)
  factory_girl
  geokit (= 1.5.0)
  json_pure (= 1.2.0)
  mysql
  newrelic_rpm (= 2.10.5)
  oauth (= 0.3.6)
  paperclip (= 2.3.1.1)
  rack-contrib (= 0.9.2)
  rack-oauth (= 0.1.5)
  rails (= 2.3.5)
  raspell (= 1.1)
  rspec (= 1.3.0)
  rspec-rails (= 1.3.0)
  ruby-debug
  selenium-client (= 1.2.18)
  thinking-sphinx (= 1.3.15)
  thinking-sphinx-raspell (= 1.1.1)
  twitter (= 0.8.6)
  uniquify (= 0.1.0)
  webrat (= 0.7.1)

output

$ rake --trace
(in /Users/luca/Developer/frestyl)
rake aborted!
You have already activated json_pure 1.4.3, but your Gemfile requires json_pure 1.2.0. Consider using bundle exec.
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/bundler-1.0.0.rc.1/lib/bundler/runtime.rb:27:in `setup'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/bundler-1.0.0.rc.1/lib/bundler/spec_set.rb:12:in `each'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/bundler-1.0.0.rc.1/lib/bundler/spec_set.rb:12:in `each'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/bundler-1.0.0.rc.1/lib/bundler/runtime.rb:17:in `setup'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/bundler-1.0.0.rc.1/lib/bundler.rb:97:in `setup'
/Users/luca/Developer/frestyl/config/../config/preinitializer.rb:16
/Users/luca/Developer/frestyl/config/boot.rb:28:in `load'
/Users/luca/Developer/frestyl/config/boot.rb:28:in `preinitialize'
/Users/luca/Developer/frestyl/config/boot.rb:10:in `boot!'
/Users/luca/Developer/frestyl/config/boot.rb:124
/opt/ruby-enterprise/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/opt/ruby-enterprise/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/Users/luca/Developer/frestyl/Rakefile:4
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `load'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2017:in `load_rakefile'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2016:in `load_rakefile'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2000:in `run'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
/opt/ruby-enterprise/bin/rake:19:in `load'
/opt/ruby-enterprise/bin/rake:19