So I thought line [69](https://github.com/ddollar/heroku-buildpack-multi/pull/25/files#diff-c7b43338c09c3c9afd420fd8b6bb5198R69) would do that but frankly I'm not fluent in Bash. I can buy fruits and vegetables at the market, but it's not my native tongue. Open to suggestion. I would like to preserve the ability -- somehow -- to see the output from `detect` for the case when it fails.