[Analyzer] Implicitly unlock all local dependencies when installing.

CHANGELOG.md

@@ -18,6 +18,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
   [#3912](https://github.com/CocoaPods/CocoaPods/issues/3912)
 
+* Implicitly unlock all local dependencies when installing.  
+  [Samuel Giddins](https://github.com/segiddins)
+  [#3764](https://github.com/CocoaPods/CocoaPods/issues/3764)
+
 
 ## 0.38.2
 

lib/cocoapods/installer/analyzer.rb

@@ -397,6 +397,7 @@ module Pod
         else
           pods_to_update = result.podfile_state.changed + result.podfile_state.deleted
           pods_to_update += update[:pods] if update_mode == :selected
+          pods_to_update += podfile.dependencies.select(&:local?).map(&:name)
           LockingDependencyAnalyzer.generate_version_locking_dependencies(lockfile, pods_to_update)
         end
       end