#3342 [BUG] Type transformer fails on local runs when list is composed within the workflow definition Issue created by bstadlbauer Describe the bug The following example serializes, registers and runs fine remotely. However, when trying to run it locally it fails:

from typing import List

from flytekit import task, workflow


@task
def my_task_1() -> int:
    return 1


@task
def my_task_2(integers: List[int]) -> int:
    return sum(integers)


@workflow
def subworkflow(integers: List[int]) -> int:
    return my_task_2(integers=integers)


@workflow
def my_workflow() -> int:
    result = my_task_1()
    return subworkflow(integers=[result])


if __name__ == "__main__":
    print(f"Running {__file__} main...")
    print(my_workflow())

with:

Traceback (most recent call last):
  File "/Users/bstadlbauer/workspace/pachama/protocol-baseline/flyte/baseline/demo.py", line 29, in <module>
    print(my_workflow())
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/workflow.py", line 258, in __call__
    return flyte_entity_call_handler(self, *args, **input_kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/promise.py", line 1050, in flyte_entity_call_handler
    result = cast(LocallyExecutable, entity).local_execute(child_ctx, **kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/workflow.py", line 273, in local_execute
    function_outputs = self.execute(**kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/workflow.py", line 708, in execute
    return exception_scopes.user_entry_point(self._workflow_function)(**kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/exceptions/scopes.py", line 198, in user_entry_point
    return wrapped(*args, **kwargs)
  File "/Users/bstadlbauer/workspace/pachama/protocol-baseline/flyte/baseline/demo.py", line 24, in my_workflow
    return subworkflow(integers=[result])
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/workflow.py", line 258, in __call__
    return flyte_entity_call_handler(self, *args, **input_kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/promise.py", line 1042, in flyte_entity_call_handler
    return cast(LocallyExecutable, entity).local_execute(ctx, **kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/workflow.py", line 269, in local_execute
    kwargs[k] = Promise(var=k, val=TypeEngine.to_literal(ctx, v, t, self.interface.inputs[k].type))
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/type_engine.py", line 767, in to_literal
    lv = transformer.to_literal(ctx, python_val, python_type, expected)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/type_engine.py", line 924, in to_literal
    lit_list = [TypeEngine.to_literal(ctx, x, t, expected.collection_type) for x in python_val]  # type: ignore
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/type_engine.py", line 924, in <listcomp>
    lit_list = [TypeEngine.to_literal(ctx, x, t, expected.collection_type) for x in python_val]  # type: ignore
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/type_engine.py", line 751, in to_literal
    transformer.assert_type(python_type, python_val)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/baseline-dev/lib/python3.8/site-packages/flytekit/core/type_engine.py", line 90, in assert_type
    raise TypeTransformerFailedError(f"Type of Val '{v}' is not an instance of {t}")
flytekit.core.type_engine.TypeTransformerFailedError: Type of Val 'Resolved(o0=scalar {
  primitive {
    integer: 1
  }
}
)' is not an instance of <class 'int'>

Expected behavior The workflow should succeed locally. Additional context to reproduce No response Screenshots No response Are you sure this issue hasn't been raised already? ☑︎ Yes Have you read the Code of Conduct? ☑︎ Yes flyteorg/flyte