Issue when installing dependent eggs

[GreenGremlin]

I'm having an issue when installing multiple eggs that are dependent on each other. The eggs I'm having issues with are thumbor and thumbor-plugins. Manually installing thumbor then thumbor-plugins works fine, but when installing them with sprinter, or by adding them both to a requirements.txt file; the install fails. Even though thumbor installs first, it is not available when thumbor-plugins is installing. I've filed a bug on thumbor-plugins, but I wonder if there's a way around it in sprinter. Maybe there should be a a way of specfying dependencies and then we install the dependencies first?

see: thumbor/thumbor-plugins#17