"Invalid config" error when using nested groups

When I attempt to configure powercalc with nested groups, I get an “Invalid config” error. The readme says “Each entry under entities can use the same configuration as when defined directly under sensor”, so this seems like a bug. Here is the error:

2022-01-03 21:46:44 ERROR (MainThread) [homeassistant.config] Invalid config for [sensor.powercalc]: [create_group] is an invalid option for [sensor.powercalc]. Check: sensor.powercalc->entities->0->create_group. (See /config/configuration.yaml, line 498). Please check the docs at https://github.com/bramstroker/homeassistant-powercalc

Here’s an example of the type of config I am trying to use:

sensor:
  - platform: powercalc
    create_group: Total
    entities:
      - create_group: All Lights
        entities:
          - entity_id: light.living_room
          - entity_id: light.kitchen
          - entity_id: light.hallway
      - entity_id: switch.tv
      - entity_id: switch.pc
      - entity_id: switch.freezer

This would create two groups: one that contains only the lights, and another that contains the lights as well as the other devices.

[bramstroker]

Release in v0.15.0-beta.2

[bramstroker]

This is not a bug because nesting has never been implemented.

I agree this would be a nice addition though. Not sure about the feasibility yet, need to have a look into that.