converge_dependencies

# File lib/bundler/definition.rb, line 691
    def converge_dependencies
      frozen = Bundler.frozen_bundle?
      (@dependencies + @locked_deps.values).each do |dep|
        locked_source = @locked_deps[dep.name]
        # This is to make sure that if bundler is installing in deployment mode and
        # after locked_source and sources don't match, we still use locked_source.
        if frozen && !locked_source.nil? &&
            locked_source.respond_to?(:source) && locked_source.source.instance_of?(Source::Path) && locked_source.source.path.exist?
          dep.source = locked_source.source
        elsif dep.source
          dep.source = sources.get(dep.source)
        end
        if dep.source.is_a?(Source::Gemspec)
          dep.platforms.concat(@platforms.map {|p| Dependency::REVERSE_PLATFORM_MAP[p] }.flatten(1)).uniq!
        end
      end

      changes = false
      # We want to know if all match, but don't want to check all entries
      # This means we need to return false if any dependency doesn't match
      # the lock or doesn't exist in the lock.
      @dependencies.each do |dependency|
        unless locked_dep = @locked_deps[dependency.name]
          changes = true
          next
        end

        # Gem::Dependency#== matches Gem::Dependency#type. As the lockfile
        # doesn't carry a notion of the dependency type, if you use
        # add_development_dependency in a gemspec that's loaded with the gemspec
        # directive, the lockfile dependencies and resolved dependencies end up
        # with a mismatch on #type. Work around that by setting the type on the
        # dep from the lockfile.
        locked_dep.instance_variable_set(:@type, dependency.type)

        # We already know the name matches from the hash lookup
        # so we only need to check the requirement now
        changes ||= dependency.requirement != locked_dep.requirement
      end

      changes
    end