[Installer] Updated downloader.

Gemfile.lock

@@ -17,7 +17,7 @@ GIT
 
 GIT
   remote: git://github.com/CocoaPods/cocoapods-downloader
-  revision: 21f5a7b118d4071f21f810694d026c3a4e00df50
+  revision: 4ec997acca892f238aa8ced4edf37e95e69b5127
   specs:
     cocoapods-downloader (0.1.0)
 
@@ -91,7 +91,7 @@ GEM
     pygments.rb (0.3.2)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    rake (0.9.5)
+    rake (0.9.6)
     rb-fsevent (0.9.2)
     redcarpet (2.2.2)
     slop (3.3.3)

lib/cocoapods/config.rb

 require 'pathname'
 
 module Pod
+
+  # Stores the global configuration of CocoaPods.
+  #
   class Config
 
     # @!group Paths
@@ -38,9 +41,6 @@ module Pod
     # @return [Bool] Whether the generated documentation should be installed to
     #         Xcode.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :new_version_message
     alias_method  :new_version_message?, :new_version_message
 
@@ -50,48 +50,39 @@ module Pod
 
     # @return [Bool] Whether the installer should clean after the installation.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :clean
     alias_method  :clean?, :clean
 
     # @return [Bool] Whether the documentation should be generated for the
     #         installed Pods.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :generate_docs
     alias_method  :generate_docs?, :generate_docs
 
     # @return [Bool] Whether the generated documentation should be installed to
     #         Xcode.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :doc_install
     alias_method  :doc_install?, :doc_install
 
     # @return [Bool] Whether CocoaPods should integrate a user target and build
     #         the workspace or just create the Pods project.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :integrate_targets
     alias_method  :integrate_targets?, :integrate_targets
 
 
     # @return [Bool] Whether the installer should skip the repos update.
     #
-    # @note   This is stored by the Config class so a global value value can be
-    #         set.
-    #
     attr_accessor :skip_repo_update
     alias_method  :skip_repo_update?, :skip_repo_update
 
+    # @return [Bool] Whether the donwloader should use more agressive caching
+    #         options.
+    #
+    attr_accessor :agressive_cache
+    alias_method  :agressive_cache?, :agressive_cache
+
     #--------------------------------------#
 
     def initialize

lib/cocoapods/installer.rb

@@ -610,18 +610,27 @@ module Pod
 
     # Downloads a Pod forcing the `bleeding edge' version if requested.
     #
+    # @todo store the source of non specific downloads in the lockfile.
+    #
     # @return [void]
     #
     def download_pod(pod)
       downloader = Downloader.for_target(pod.root, pod.top_specification.source.dup)
       downloader.cache_root = "~/Library/Caches/CocoaPods"
       downloader.max_cache_size = 500
+      downloader.agressive_cache = config.agressive_cache?
+
       if pod.top_specification.version.head?
         downloader.download_head
+        specific_source = downloader.checkout_options
       else
         downloader.download
+        specific_source = downloader.checkout_options if downloader.specific_options?
       end
       pod.downloaded = true
+      if specific_source
+        # store the specific source
+      end
     end
 
     # Generates the documentation of a Pod unless it exists for a given