How do I get setup a solid with one or more input dependencies and one or more order-based dependencies? I’ve tried:

@solid(
    input_defs=[
        InputDefinition("start_after", Nothing),
        InputDefinition("shell_command", str),
        InputDefinition("env_dict", dict),
    ],
    output_defs=[OutputDefinition(str, "result")],
)
def run_shell_command(context, shell_command, env_dict):
    ...

I’m invoking the solid as follows:

run_shell_command([store_secret_locally()], solid_1(), solid_2())

but I get an error:

dagster.core.errors.DagsterInvalidDefinitionError: Invalid dependencies: for solid "store_secret_locally" input "shell_command", the DagsterType "String" does not support fanning in (MultiDependencyDefinition). Use the List type, since fanning in will result in a list.

use

kwargs

run_shell_command(start_after=[store_secret_locally()], shell_command=solid_1(), env_dict=solid_2())

we use the decorated functions positional args as the source of truth when you are passing by argument order, not the

input_defs

list

perfect. Thanks!

@Dagster Bot issue better error for positional arguments with Nothing inputs

Created issue at: https://github.com/dagster-io/dagster/issues/4271