Hi! I have op with

Nothing

dependency as below:

@op(input_defs=[InputDefinition("start", Nothing)])
def install_deps(context, package: str = ""):
    ...

Now I'm trying to invoke it for testing as below:

def test_install_deps():
    context = build_solid_context()
    result = install_deps(context, package="test")

But it fails

dagster.core.errors.DagsterInvalidInvocationError: No value provided for required input "start".

if I pass

start

as

@op
def dummy_op():
    return

install_deps(context, start=dummy_op(),  package="test")

I get:

TypeError: install_deps() got an unexpected keyword argument 'start'

How else should I pass the input

start

?

taking a look

Thanks @chris !