Do `openzeppelin` commands use Truffle?

Patrick on Telegram asked: do oz commands (oz compile, oz push, oz update) use Truffle under the hood?

Answers on Telegram:

@ylv-io: No. Also oz compile is way faster than truffle compile, test it yourself.

@spalladino: There is an exception: if there is a truffle.js or truffle-config.js file in your project, then any time that oz needs to compile, it will delegate to truffle compile. However, if you explicitly run oz compile, it will switch to using the internal oz compiler, regardless of whether you have a truffle.js config or not.