Somewhat related to the 'component install --dev' not forwarding the dev build (
https://groups.google.com/forum/#!topic/componentjs/TftPQ0rgIjs),
I'd expected my use of Builder.development() to include the dev deps for any "local" components. It looks like lookup paths should be similarly copied.
I'm not real keen on putting more into the core builder but having a shallow copy of deps kind of forces it.
As a side note, it seems like 'dependencies' could be modeled explictly and passed in as a service for builder to visit. That way these environmental concerns are outside builder and the dev can extend beyond just 'development' (ie, 'test' and 'ci' would be handy).