heroku/heroku-buildpack-ruby — pull request #10 by wuputah (2012-03-06 23:11:17+00:00)
Title: Dont install plugins if plugins exist as gems

Safe to do now, but needs `rails_log_stdout` and `rails3_serve_static_assets` released as gems. @ddollar, can you do this?

Doesn't address how to handle when broken asset pipeline compilation fails (`rails31_enable_runtime_asset_compilation`).