Beginner question - I was testing out setting different Input and Output definitions and noticed that when I use List ( from dagster import List ) in the dagster UI it always shows the input and outputs as the Any type. When I use Int or Float it shows correctly in the UI. Is this expected behaviour or am I missing something really simple?

@solid(
    output_defs=[OutputDefinition(dagster_type=List)]
)

It looks like the type is

[Any]

, i.e. a list with elements of

Any

type. That's what you specified. If you want something more specific, e.g. a list of ints, use

dagster_type=List[int]

Ah nice one @Liam Coatman