0
@@ -8,11 +8,17 @@ module Rails
0
 
0
     def initialize(name, options = {})
0
       require 'rubygems' unless Object.const_defined?(:Gem)
0
-      @name     = name.to_s
0
-      if options[:version]
0
+
0
+      if options[:requirement]
0
+        @requirement = options[:requirement]
0
+      elsif options[:version]
0
         @requirement = Gem::Requirement.create(options[:version])
0
-        @version     = @requirement.instance_variable_get("@requirements").first.last
0
+      else
0
+        raise ArgumentError.new('Must pass either :version or :requirement')
0
       end
0
+
0
+      @version     = @requirement.instance_variable_get("@requirements").first.last if @requirement
0
+      @name     = name.to_s
0
       @lib      = options[:lib]
0
       @source   = options[:source]
0
       @loaded   = @frozen = @load_paths_added = false
0
@@ -35,6 +41,14 @@ module Rails
0
       puts $!.to_s
0
     end
0
     
0
+    def dependencies
0
+      all_dependencies = specification.dependencies.map do |dependency|
0
+        GemDependency.new(dependency.name, :requirement => dependency.version_requirements)
0
+      end
0
+      all_dependencies += all_dependencies.map(&:dependencies).flatten
0
+      all_dependencies.uniq
0
+    end
0
+    
0
     def gem_dir(base_directory)
0
       File.join(base_directory, specification.full_name)
0
     end
0
@@ -64,10 +78,6 @@ module Rails
0
       Gem::GemRunner.new.run(install_command)
0
     end
0
     
0
-    def specification
0
-      @spec ||= Gem.source_index.search(Gem::Dependency.new(@name, @requirement)).sort_by { |s| s.version }.last
0
-    end
0
-
0
     def unpack_to(directory)
0
       FileUtils.mkdir_p directory
0
       Dir.chdir directory do
0
@@ -83,6 +93,16 @@ module Rails
0
       end
0
     end
0
 
0
+    def ==(other)
0
+      self.name == other.name && self.requirement == other.requirement
0
+    end
0
+
0
+private ###################################################################
0
+
0
+    def specification
0
+      @spec ||= Gem.source_index.search(Gem::Dependency.new(@name, @requirement)).sort_by { |s| s.version }.last
0
+    end
0
+
0
     def install_command
0
       cmd = %w(install) << @name
0
       cmd << "--version" << "#{@requirement.to_s}" if @requirement

0
@@ -39,4 +39,20 @@ namespace :gems do
0
       gem.unpack_to(File.join(RAILS_ROOT, 'vendor', 'gems')) if gem.loaded?
0
     end
0
   end
0
+  
0
+  namespace :unpack do
0
+    desc "Unpacks the specified gems and its dependencies into vendor/gems"
0
+    task :dependencies => :unpack do
0
+      require 'rubygems'
0
+      require 'rubygems/gem_runner'
0
+      Rails.configuration.gems.each do |gem|
0
+        next unless ENV['GEM'].blank? || ENV['GEM'] == gem.name
0
+        gem.dependencies.each do |dependency|
0
+          dependency.add_load_paths # double check that we have not already unpacked
0
+          next if dependency.frozen?
0
+          dependency.unpack_to(File.join(RAILS_ROOT, 'vendor', 'gems'))
0
+        end
0
+      end
0
+    end
0
+  end
0
 end
0
\ No newline at end of file