A rails 3.0.x project I am working with uses a gem that contains a large amount of test data that isn't needed for the heroku deployment. I would like to exclude this from the heroku slug, as it adds a few dozen megs to the slug (and has pushed us past the 100mb size limit several times, our slug is large for other reasons.)
I've tried doing this using the .slugignore mechanism, but I can't find a way to have it exclude files in gems as opposed to files in the app. This is a rails 3.0.x application running on the bamboo stack, but I would upgrade to rails 3.1 and/or the cedar stack if there was a workaround / procedure in those versions.
Other suggestions about fixing this that aren't 'make the huge gem smaller' are also great and extremely welcome.