The core philosophy of Hydra (especially relevant in the 1.x series) is that your configuration should be composable. Instead of having one massive config.yaml file, you break your configuration into smaller modules.
If you are upgrading an existing project to Hydra 1.2, keep these tips in mind: hydra 1.2
April 14, 2026 Category: Developer Tools / MLOps The core philosophy of Hydra (especially relevant in the 1
If you set hydra/config=strict , Hydra will now throw a hard exception if you try to access a configuration node that doesn't exist. aiding in debugging and validation.
: Introduced an --experimental-rerun option to reproduce single runs that were previously persisted, aiding in debugging and validation.