The language server currently doesn't return hover info for custom types and their constructors. It would be useful for the language server to support this.

//// wibble.gleam

type Wibble {
  // ^ wibble.Wibble

  Wibble(Int)
  // ^ fn(Int) -> Wibble

  Wobble(String)
  // ^ fn(String) -> Wibble
}

The proposed behavior above would be consistent with the hover info of type annotations and constructor expressions.