Add patch to fix GET Bucket requests to fake-s3

See https://github.com/jubos/fake-s3/pull/37

Signed-off-by: Shea Levy <shea@shealevy.com>

pkgs/development/interpreters/ruby/patches.nix

@@ -117,4 +117,11 @@ in
   };
   
   pry = { gemFlags = "--no-ri --no-rdoc"; };
+
+  fakes3 = {
+    postInstall = ''
+      cd $out/${ruby.gemPath}/gems/*
+      patch -Np1 -i ${../../ruby-modules/fake-s3-list-bucket.patch}
+    '';
+  };
 }

pkgs/development/ruby-modules/fake-s3-list-bucket.patch

@@ -0,0 +1,30 @@
+commit 983634ea6b81910529596c262644eacfa2c2c4f9
+Author: Shea Levy <shea@shealevy.com>
+Date:   Wed Sep 4 16:16:12 2013 -0400
+
+    Fix LS_BUCKET
+    
+    GET foo.s3.amazonaws.com/ and GET s3.amazonaws.com/foo should result in
+    an LS_BUCKET request, but under the previous logic it would result in a
+    LIST_BUCKETS request. GET s3.amazonaws.com/ still results in a
+    LIST_BUCKETS request due to the 'if path == "/" and s_req.is_path_style'
+    conditional.
+    
+    Signed-off-by: Shea Levy <shea@shealevy.com>
+
+diff --git a/lib/fakes3/server.rb b/lib/fakes3/server.rb
+index 6958151..36d9cad 100644
+--- a/lib/fakes3/server.rb
++++ b/lib/fakes3/server.rb
+@@ -213,10 +213,7 @@ module FakeS3
+           elems = path.split("/")
+         end
+ 
+-        if elems.size == 0
+-          # List buckets
+-          s_req.type = Request::LIST_BUCKETS
+-        elsif elems.size == 1
++        if elems.size < 2
+           s_req.type = Request::LS_BUCKET
+           s_req.query = query
+         else