Expected type ... SketchError ... found type ... Error on tardis 0.2

[edman]

I get build errors in my app on gleam run -m lustre/dev build after updating tardis to 0.2.

  Compiling tardis
error: Type mismatch
    ┌─ /client/build/packages/tardis/src/tardis.gleam:134:17
    │
134 │   |> result.try(start_lustre(lustre_root, _))
    │                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Expected type:

    fn(App(Nil, Model, Msg)) ->
      Result(fn(Action(Msg, ClientSpa)) -> Nil, SketchError)

Found type:

    fn(App(Nil, Model, Msg)) -> Result(fn(Action(Msg, ClientSpa)) -> Nil, Error)

It looks like gleam's type checker infers different types for sketch.cache depending on the target.

This returns a Result(Cache, a)
https://github.com/ghivert/sketch/blob/main/sketch/src/sketch.gleam#L77

While this returns a Result(Cache, SketchError)
https://github.com/ghivert/sketch/blob/main/sketch/src/sketch.gleam#L88

[ghivert]

Hi!
Could you show your start_lustre function?

[brettcannon]

I'm seeing the same error:

error: Type mismatch
    ┌─ /home/brett/Repositories/brettcannon/choose-a-font.dev/build/packages/tardis/src/tardis.gleam:134:17
    │
134 │   |> result.try(start_lustre(lustre_root, _))
    │                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Expected type:

    fn(App(Nil, Model, Msg)) -> Result(fn(Action(Msg, lustre.ClientSpa)) -> Nil, error.SketchError)

Found type:

    fn(App(Nil, Model, Msg)) -> Result(fn(Action(Msg, lustre.ClientSpa)) -> Nil, error.Error)

I'm using lustre.simple() and launching using gleam run -m lustre/dev start.

And my start_lustre function from tardis.gleam is:

fn start_lustre(lustre_root, application) {
  application
  |> lustre.start(lustre_root, Nil)
  |> result.map_error(error.LustreError)
}

This is with:

• lustre 4.6.3
• lustre_dev_tools 1.6.2
• tardis 0.2.0