Gir doesn't generate callback ("gir cannot generate nullable async callback")

[haecker-felix]

Gir refuses to generate soup_session_queue_message:

    //fn queue_message<P: IsA<Message>>(&self, msg: &P, callback: Option<Box<dyn FnOnce(&Session, &Message) + 'static>>) {
    //    unsafe { TODO: call soup_sys:soup_session_queue_message() }
    //}

https://gitlab.gnome.org/haecker-felix/soup-rs/blob/master/soup/src/auto/session.rs#L459

The fn itself exists in my sys crate: pub fn soup_session_queue_message(session: *mut SoupSession, msg: *mut SoupMessage, callback: SoupSessionCallback, user_data: gpointer); https://gitlab.gnome.org/haecker-felix/soup-rs/blob/master/soup-sys/src/lib.rs#L2734

While running 'gir', I get this message: Gir doesn't generate callback ("gir cannot generate nullable async callback")

The complete code is here: https://gitlab.gnome.org/haecker-felix/soup-rs

Is there an easy way to fix this? Should it possible to autogenerate this, or do I need to implement it manually?

[sdroege]

@GuillaumeGomez Do you remember why this is not supported currently? We handle nullable callbacks in other cases, and this here would work the same in the generated code or not?

[GuillaumeGomez]

I don't remember precisely but my guess would be because the PR was already huge enough and I didn't encounter this while testing.