When :path option for gem dependency in Gemfile points to a source that is itself bundled, development dependencies are incorrectly required

[jtrupiano]

1. Clone factory_girl, cd in and gem bundle it.
2. Create a new directory with only this Gemfile: http://gist.github.com/279482
3. Run gem bundle --> Leads to this error for me: http://gist.github.com/279479

When I kill the bundle in factory_girl and then bundle the app it works fine.