Node.js detection fixed in Ruby buildpack
Change effective on 03 November 2015
Previously if you were deploying a Ruby app that needed a specific version of Node.js, you would rely on running the Node.js buildpack and then the Ruby buildpack. This integration was broken when the Node.js buildpack changed the location of the node binary. The node.js support in the Ruby buildpack has been fixed so that now any node binary on the
PATH will prevent the Ruby buildpack from overwriting node. See the installed binaries section for more information on Node.js support with the Ruby buildpack.