[PathSource] Remove the stored lockfile checkout source when switching to a development pod.

CHANGELOG.md

@@ -44,6 +44,11 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Samuel Giddins](https://github.com/segiddins)
   [#3136](https://github.com/CocoaPods/CocoaPods/issues/3136)
 
+* Remove the stored lockfile checkout source when switching to a development
+  pod.  
+  [Samuel Giddins][https://github.com/segiddins]
+  [#3141](https://github.com/CocoaPods/CocoaPods/issues/3141)
+
 
 ## 0.36.0.beta.2
 

lib/cocoapods/external_sources/path_source.rb

@@ -19,6 +19,7 @@ module Pod
           store_podspec(sandbox, podspec, podspec.extname == '.json')
           is_absolute = absolute?(declared_path)
           sandbox.store_local_path(name, podspec.dirname, is_absolute)
+          sandbox.remove_checkout_source(name)
         end
       end
 

lib/cocoapods/sandbox.rb

@@ -354,6 +354,18 @@ module Pod
       checkout_sources[root_name] = source
     end
 
+    # Removes the checkout source of a Pod.
+    #
+    # @param  [String] name
+    #         The name of the Pod.
+    #
+    # @return [void]
+    #
+    def remove_checkout_source(name)
+      root_name = Specification.root_name(name)
+      checkout_sources.delete(root_name)
+    end
+
     # @return [Hash{String=>Hash}] The options necessary to recreate the exact
     #         checkout of a given Pod grouped by its name.
     #

spec/unit/external_sources/path_source_spec.rb

@@ -36,6 +36,12 @@ module Pod
       }
     end
 
+    it 'removes sandbox lockfile checkout options for the pod' do
+      config.sandbox.store_checkout_source('Reachability', http: 'https://example.com')
+      @subject.fetch(config.sandbox)
+      config.sandbox.checkout_sources['pod'].should.be.nil
+    end
+
     it 'raises if the podspec cannot be found' do
       @subject.stubs(:params).returns(:path => temporary_directory)
       should.raise Informative do