// and checking against it?).
book!(
CargoBook, "src/tools/cargo/src/doc", "cargo", submodule = "src/tools/cargo";
+ ClippyBook, "src/tools/clippy/book", "clippy";
EditionGuide, "src/doc/edition-guide", "edition-guide", submodule;
EmbeddedBook, "src/doc/embedded-book", "embedded-book", submodule;
Nomicon, "src/doc/nomicon", "nomicon", submodule;