The following works:

#[derive(Encode, Decode)]
pub struct MyStruct<T: Clone> {
    pub a: A,
    pub b: B<T>,
}

Using a where statement does not work:

#[derive(Encode, Decode)]
pub struct MyStruct<T>
where T: Clone,
{
    pub a: A,
    pub b: B<T>,
}

Error:
expected one of `{`, lifetime, or type, found `,`

The issue is made worse by the Rust formatter in VS Code insisting that there is a comma after the 'where' declaration. If not, then I could just remove the comma, but it is automatically inserted