kfp                              2.13.0
kfp-pipeline-spec                0.7.0
kfp-server-api                   2.4.0

from kfp import compiler
from kfp import dsl


@dsl.component
def hello(level1_whole: str, level1_partial: str, level2: dict):
    print(level1_whole, level1_partial, level2)


@dsl.pipeline(name="hello-pipeline")
def my_pipeline(greeting: str):
    hello(
        level1_whole=greeting,
        level1_partial=f"greeting={greeting}",
        level2={
            "level2_whole": greeting,
            "level2_partial": f"greeting={greeting}",
        })


if __name__ == '__main__':
    package_path = __file__ + ".yaml"
    compiler.Compiler().compile(my_pipeline, package_path)

        inputs:
          parameters:
            level1_partial:
              runtimeValue:
                constant: greeting={{$.inputs.parameters['pipelinechannel--greeting']}}
            level1_whole:
              componentInputParameter: greeting
            level2:
              runtimeValue:
                constant:
                  level2_partial: greeting={{channel:task=;name=greeting;type=String;}}
                  level2_whole: '{{$.inputs.parameters[''pipelinechannel--greeting'']}}'
            pipelinechannel--greeting:
              componentInputParameter: greeting