Request for Enhancement: Remove need for #[deku(id = "N)] in exhaustive defininition of discriminants of enum.

I have an enum with 256 variants for which the discriminant is defined for all of them. Currently deku requires me to annotate every variant with #[deku(id = "N)] although the discriminant is already defined in the code, which feels very redundant. Here is a minimal example, which does not work without the id annotation:

#![feature(arbitrary_enum_discriminant)]
use deku::prelude::*;
#[derive(Debug, PartialEq, DekuRead, DekuWrite)]
#[deku(type = "u8")]
#[repr(u8)]
pub enum ServerMessage {
    #[deku(id = "0")]
    GameLoading = 0x00,
    #[deku(id = "1")]
    GameFlags {
        difficulty: u8,
        arena_flags: u32,
        is_expansion: u8,
        is_ladder: u8,
    } = 0x01,
    #[deku(id = "2")]
    LoadSuccessful = 0x02,
    #[deku(id = "3")]
    LoadAct {
        act: u8,
        map_id: u32,
        area_id: u16,
        automap: u32,
    } = 0x03,
    //...
    // messages defined until discriminant 0xFF
}

fn main() {
}

If i omit #[deku(id = "N)] i get the following error:

 --> src/main.rs:3:28
  |
3 | #[derive(Debug, PartialEq, DekuRead, DekuWrite)]
  |                            ^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
  |
  = note: this error originates in the derive macro `DekuRead` (in Nightly builds, run with -Z macro-backtrace for more info)

Would it be possible to check if the enum discriminants are exhaustively defined and remove the need for #[deku(id = "N)] in this case?

sharksforarms / deku

Request for Enhancement: Remove need for #[deku(id = "N)] in exhaustive defininition of discriminants of enum. #251