Load only required podspecs for external dependencies [see 15c4ca3]

lib/cocoapods/sandbox.rb

@@ -46,14 +46,18 @@ module Pod
       headers_root.rmtree if headers_root.exist?
     end
 
-    def installed_pods
-      Dir[root + "**/*.podspec"].map do |podspec|
-        LocalPod.from_podspec(Pathname.new(podspec), self)
+    def podspec_for_name(name)
+      if spec_path = Dir[root + "#{name}/*.podspec"].first
+        Pathname.new(spec_path)
+      elsif spec_path = Dir[root + "Local Podspecs/#{name}.podspec"].first
+        Pathname.new(spec_path)
       end
     end
 
     def installed_pod_named(name)
-      installed_pods.find { |pod| pod.name == name }
+      if spec_path = podspec_for_name(name)
+        LocalPod.from_podspec(spec_path, self)
+      end
     end
   end
 end