Buildr currently pulls in quite a few dependencies that it could probably do without in the runtime.
rspec, rubyforge being a few of these dependencies that buildr coud do without. rubygems has a new nifty thing that lets one add dev-time dependencies, which buildr could use. See [1] for an example.[1] http://github.com/ketan/buildr4eclipse/blob/5fba27e0444fe8f87554b0da1bc29eee6e5015fd/buildr4eclipse.gemspec
-- Ketan
