Ch2. serde Deserialize feature not explicit

[tylerhjones]

info: The currently active `rustc` version is `rustc 1.63.0-nightly (cd282d7f7 2022-05-18)`

[dependencies]
anyhow = "1.0.57"
rayon = "1.5.3"
serde = "1.0.137"
thiserror = "1.0.31"

My model.rs file is the same as https://github.com/skerkour/black-hat-rust/blob/main/ch_02/tricoder/src/model.rs
yet the compiler complains

error: cannot find derive macro `Deserialize` in this scope
  --> src/model.rs:15:17
   |
15 | #[derive(Debug, Deserialize, Clone)]
   |                 ^^^^^^^^^^^
   |
note: `Deserialize` is imported here, but it is only a trait, without a derive macro
  --> src/model.rs:1:5
   |
1  | use serde::Deserialize;
   |     ^^^^^^^^^^^^^^^^^^

Your repo shows this import as a feature inclusion;

serde = { version = "1", features = ["derive"] }

but this is never mentioned in the book afaict.

[tylerhjones]

I knew this error from prior experience, but it may not be known by other readers.

[sylvain101010]

Thank you for the feedback!

At the moment I have no plan to change this, as I consider the GitHub repository as the source of truth for the code, while the book explains the code concepts.

The features feature was ruled out of scope of the book, but if more people report being confused, I may revisit this decision :)

[tylerhjones]

👍🏻