Install a Pod directly from its repo.

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "spec/fixtures/spec-repos/master"]
 	path = spec/fixtures/spec-repos/master
 	url = git://github.com/alloy/cocoapods-specs.git
+[submodule "spec/fixtures/integration/sstoolkit"]
+	path = spec/fixtures/integration/sstoolkit
+	url = https://github.com/samsoffes/sstoolkit.git

lib/cocoapods/dependency.rb

@@ -44,6 +44,17 @@ module Pod
       !@specification.nil?
     end
 
+    def specification
+      @specification ||= begin
+        # This is an external podspec
+        pod_root = Config.instance.project_pods_root + @name
+        downloader = Downloader.for_source(pod_root, @external_spec_source)
+        downloader.download
+        file = pod_root + "#{@name}.podspec"
+        Specification.from_file(file)
+      end
+    end
+
     # Taken from a newer version of RubyGems
     unless public_method_defined?(:merge)
       def merge other

lib/cocoapods/downloader.rb

@@ -25,10 +25,14 @@ module Pod
         elsif @options[:commit]
           download_commit
         else
-          raise "Either a tag or a commit has to be specified."
+          download_head
         end
       end
 
+      def download_head
+        git "clone '#{@url}' '#{@pod_root}'"
+      end
+
       def download_tag
         @pod_root.mkdir
         Dir.chdir(@pod_root) do

lib/cocoapods/resolver.rb

@@ -23,7 +23,11 @@ module Pod
     end
 
     def find_dependency_set(dependency)
-      Source.search(dependency)
+      if dependency.external_podspec?
+        Specification::Set::External.new(dependency.specification)
+      else
+        Source.search(dependency)
+      end
     end
 
     def validate_platform!(set)

lib/cocoapods/specification/set.rb

@@ -81,6 +81,40 @@ module Pod
           Version.new(basename) if v.directory? && basename[0,1] != '.'
         end.compact.sort.reverse
       end
+
+      class External < Set
+        def initialize(specification)
+          @specification = specification
+          @required_by = []
+        end
+
+        def name
+          @specification.name
+        end
+
+        def required_by(specification)
+          before = @specification
+          super(specification)
+        ensure
+          @specification = before
+        end
+
+        def only_part_of_other_pod?
+          false
+        end
+
+        def specification_path
+          raise "specification_path"
+        end
+
+        def specification
+          @specification
+        end
+
+        def versions
+          [@specification.version]
+        end
+      end
     end
   end
 end

sstoolkit @ 2adcd0f8

+Subproject commit 2adcd0f81740d6b0cd4589af98790eee3bd1ae7b

spec/integration_spec.rb

@@ -38,8 +38,6 @@ else
         config.silent = true
         config.repos_dir = fixture('spec-repos')
         config.project_pods_root = temporary_directory + 'Pods'
-
-        FileUtils.cp_r(fixture('integration/.'), config.project_pods_root)
       end
 
       after do
@@ -52,6 +50,32 @@ else
         $?.should.be.success
       end
 
+      # Lame way to run on one platform only
+      if platform == :ios
+        it "installs a Pod directly from its repo" do
+          url = fixture('integration/sstoolkit').to_s
+          podfile = Pod::Podfile.new do
+            self.platform :ios
+            dependency 'SSToolkit', :git => url, :commit => '2adcd0f81740d6b0cd4589af98790eee3bd1ae7b'
+          end
+
+          # Note that we are *not* using the stubbed SpecHelper::Installer subclass.
+          installer = Pod::Installer.new(podfile)
+          installer.install!
+
+          spec = Pod::Spec.from_file(config.project_pods_root + 'SSToolkit.podspec')
+          spec.version.to_s.should == '0.1.3'
+
+          Dir.chdir(config.project_pods_root + 'SSToolkit') do
+            `git config --get remote.origin.url`.strip.should == url
+          end
+        end
+      end
+
+      before do
+        FileUtils.cp_r(fixture('integration/.'), config.project_pods_root)
+      end
+
       # TODO add a simple source file which uses the compiled lib to check that it really really works
       it "should activate required pods and create a working static library xcode project" do
         spec = Pod::Podfile.new do
@@ -220,4 +244,5 @@ else
 
     end
   end
+
 end