bug: missing type in abi for a struct only used as event parameter

[notV4l]

Bug Report

Abi is missing type infos for a struct only used as an event parameter It make it hard to parse event without type infos from abi.

Cairo version:

1.1.0 2.0.0-rc2

Current behavior:

missing in abi

 {
      "type": "struct",
      "name": "events::events::EventInfo",
      "members": [
        {
          "name": "a",
          "type": "core::felt252"
        },
      ]
    },

Expected behavior:

to be generated in abi

Related code:

#[derive(Drop, Serde, Copy)]
struct EventInfo {
    a: felt252,
}

#[contract]
mod Contract {
    use serde::Serde;
    use super::EventInfo;

    struct Storage {
        balance: felt252, 
    }

    #[event]
    fn BalanceChanged(prev_balance: felt252, balance: felt252) {}

    #[event]
    fn ComplexEvent(event_info: EventInfo) {}

    #[constructor]
    fn constructor(initial_balance: felt252) {
        balance::write(initial_balance);
    }

    #[external]
    fn send_events() {
        BalanceChanged(0, 42);

        let event_info = EventInfo {
            a: 'abc'
        };

        ComplexEvent(event_info);
    }
}

quick 2.0.0-rc2 test

#[derive(Drop, Serde, Copy)]
struct EventInfo {
    a: felt252,
}

#[starknet::contract]
mod Contract {
    use serde::Serde;
    use super::EventInfo;

    #[storage]
    struct Storage {
        balance: felt252, 
    }

    #[event]
    fn BalanceChanged(prev_balance: felt252, balance: felt252) {}

    #[event]
    fn ComplexEvent(event_info: EventInfo) {}

    #[constructor]
    fn constructor(ref self: ContractState, initial_balance: felt252) {
        self.balance.write(initial_balance);
    }

    #[external]
    fn send_events(ref self: ContractState) {
        BalanceChanged(0, 42);

        let event_info = EventInfo {
            a: 'abc' 
        };

        ComplexEvent(event_info);
    }

}

[notV4l]

using "old" syntax :

#[event]
fn ComplexEvent(event_info: EventInfo) {}

contract compiles, but EventInfo type is not generated (tested with 2.0.0-rc3)