substitutions:
  package_options:
    alternative_package:
      alternative_component:
        - id: component8
          value: 8
    fancy_package:
      fancy_component:
        - id: component9
          value: 9

  pin: 12
  some_switches:
    - platform: gpio
      id: switch1
      pin: ${pin}
    - platform: gpio
      id: switch2
      pin: ${pin+1}

  package_selection: fancy_package

packages:
  - ${ package_options[package_selection] }
  - some_component:
      - id: component1
        value: 1
  - some_component:
      - id: component2
        value: 2
  - switch: ${ some_switches }
  - packages:
      package_with_defaults: !include
        file: display.yaml
        vars:
          native_width: 100
          high_dpi: false
      my_package:
        packages:
          - packages:
              special_package:
                substitutions:
                  extended_component: component5
                some_component:
                  - id: component3
                    value: 3
        some_component:
          - id: component4
            value: 4
          - id: !extend ${ extended_component }
            power: 200
            value: 79
    some_component:
      - id: component5
        value: 5

some_component:
  - id: component6
    value: 6
  - id: component7
    value: 7