François Paugam

**Describe the bug** I am runnig orion with the hydra plugin, and when I use a nested param of the config for the fidelity space for BOHB, e.g. `hydra.sweeper.params.model.trainer.max_epochs: "fidelity(low=1,...

## Issue summary I followed the instructions to build from source on Apple silicon, but I got a make error : ``` $ pip install -e . [master] Obtaining file:///Users/fpaugam/Documents/code/stable-retro...