[TBC] Should dewret force (e.g.) mypy checking? [1-26/27]

[philtweir]

1-26:

Can pass incorrect types in workflow steps and they end up being rendered without warning. For example,

@task()
def increment(num: int) -> int:
    return num + 1

result = increment(num="Hello World")
workflow = run(result)
cwl = render(workflow)
yaml.dump(cwl, sys.stdout, indent=2)

renders

class: Workflow
cwlVersion: 1.2
inputs: {}
outputs:
  out:
    label: out
    outputSource: increment-87042095119bafeb4cbfea12f9986bb1/out
    type: int
steps:
  increment-87042095119bafeb4cbfea12f9986bb1:
    in:
      num:
        default: Hello World
    out:
    - out
    run: increment

1-27: The same issue, but when typing bugs are present in the task code, for example:

@task()
def increment(num: int) -> int:
    return "Phil loves mac"

result = increment(num=2)
workflow = run(result)
cwl = render(workflow)
yaml.dump(cwl, sys.stdout, indent=2)

@philtweir We should discuss this and decide if it is in scope of the initial feature request. If not, we should clarify this behavior in the documentation.

[elleryames]

This feature is pending strategic alignment, and thus not targeted for release/0.9.1 .
FYI: @KamenDimitrov97 @philtweir