This patch adjusts the Gemfile.
Author: Pirate Praveen <praveen@debian.org>
---

--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,10 @@
 source 'https://rubygems.org'
 
-# Specify your gem's dependencies in spring.gemspec
-gemspec
+if ENV['AUTOPKGTEST_TMP']
+  gem 'spring'
+else
+  gemspec
+end
 
 gem "rake"