我正在尝试实现Serialize外部Deserialize枚举，但我不知道如何实现。它有From<u64>所以我想做的只是让该对象序列化。
#[derive(Serialize, Deserialize)]
pub struct ImageBinds {
binds: HashMap<KeybdKey, Vec<u8>>, // KeybdKey doesn't implement serialize
}
// won't compile with this:
// only traits defined in the current crate can be implemented for arbitrary types
// impl doesn't use only types from inside the current crate
// I understand the orphan rule and all that but I have no idea how else I'd implement it
// I've looked at serde remote stuff and I …