### What needs to get done Emit a warning when `clean` is run for the `stage` or `prime` steps for a particular part. ``` Warning: Cleaning the [stage|prime] step for a part with partitions enabled is not supported. Resolution: Clean the [stage|prime] step without specifying a part. ``` ### Why it needs to get done Until https://github.com/canonical/craft-parts/issues/665 is completed, users need to know that cleaning may result in unknown behavior.