prune_git_and_path_cache

# File lib/bundler/runtime.rb, line 246
    def prune_git_and_path_cache(resolve, cache_path)
      cached = Dir["#{cache_path}/*/.bundlecache"]

      cached = cached.delete_if do |path|
        name = File.basename(File.dirname(path))

        resolve.any? do |s|
          source = s.source
          source.respond_to?(:app_cache_dirname) && source.app_cache_dirname == name
        end
      end

      if cached.any?
        Bundler.ui.info "Removing outdated git and path gems from #{Bundler.settings.app_cache_path}"

        cached.each do |path|
          path = File.dirname(path)
          Bundler.ui.info "  * #{File.basename(path)}"
          FileUtils.rm_rf(path)
        end
      end
    end