source_gen/build.yaml

# Read about `build.yaml` at https://pub.dev/packages/build_config
builders:
  combining_builder:
    import: "package:source_gen/builder.dart"
    builder_factories: ["combiningBuilder"]
    build_extensions: {".dart": [".g.dart"]}
    auto_apply: none
    build_to: source
    required_inputs: [".g.part"]
    applies_builders: ["source_gen|part_cleanup"]
post_process_builders:
  part_cleanup:
    import: "package:source_gen/builder.dart"
    builder_factory: "partCleanup"