ruby-prof, script/performance, and vendor/gems

It seems I keep having all of this fun running into issues working with Rails 2. My most recent challenge was unpacking ruby-prof as part of a Rails 2.1.2 application. Over the past few months I have spent some time getting our project to the point that we were able to unpack our required gems. Everything was working great, until I tried to using ActionController::RequestProfiler a.k.a. script/performance/request to profile a controller action. However when I tried to use it our application complained that: `gem install ruby-prof` to use the profiler
Huh? I thought I unpacked the gem in the vendor directory? A quick directory list revealed that it was there: vendor/gems/ruby-prof-0.7.3
What could be wrong? I started to trace the request script to find this little gem call in the Rails source code:

     # File actionpack/lib/action_controller/request_profiler.rb, line 146
146:       def load_ruby_prof
147:         begin
148:           gem 'ruby-prof', '>= 0.6.1'
149:           require 'ruby-prof'
150:           if mode = options[:measure]
151:             RubyProf.measure_mode = RubyProf.const_get(mode.upcase)
152:           end
153:         rescue LoadError
154:           abort '`gem install ruby-prof` to use the profiler'
155:         end
156:       end

Really? Another Evil monkey patch in my source code:

     # File /lib/core_ext/action_controller/request_profiler.rb
  def load_ruby_prof
    begin
      require 'ruby-prof'
      if mode = options[:measure]
        RubyProf.measure_mode = RubyProf.const_get(mode.upcase)
          end
    rescue LoadError
      abort '`gem install ruby-prof` to use the profiler'
    end
  end

#config/environment.rb

 Rails::Initializer.run do |config|
   config.load_paths += Dir["#{RAILS_ROOT}/vendor/gems/**"].map do |dir|
     File.directory?(lib = "#{dir}/lib") ? lib : dir
   end
 end

 # Add pagination requirement
 require "#{RAILS_ROOT}/lib/core_ext/action_controller/request_profiler"