Nested field within a Map doesnt properly derive

[spotnate]

Thanks in advance. I've been experimenting and come across an issue in deriving a map field with a nested value. Here is a contrived example

#[derive(Serialize, Deserialize, Row)]
pub struct Foo {
    pub organization: String
    pub employees: HashMap<String, Vec<Person>>,
}

pub struct Person {
    pub name: String
    pub date: DateTime64<3>
}

Although this is possible in clickhouse with

CREATE TABLE hello
(
    organization String,
    employees Map(
        LowCardinality(String), 
        Nested(
            name String,
            date DateTime64(3)
        )
    ) 
)
ENGINE = MergeTree
ORDER BY organization

For reference, derive gives the following error:

the trait bound `Person: klickhouse::FromSql` is not satisfied
the following other types implement trait `klickhouse::FromSql`:
... noise ...
required for `Vec<Person>` to implement `klickhouse::FromSql`

I've also tried to use #[klickhouse(nested)] which did not work properly