esphome/tests/unit_tests/fixtures/substitutions/package2.yaml

# included from 10-dynamic_packages.input.yaml
substitutions:
  a: from package2  # must not override base config's a
  # b not defined here, won't override package1's b
  c: from package2  # will override package1's c

package2_test_list:
  - a: ${ a }
  - b: ${ b }
  - c: ${ c }