Mastering Rust - Second Edition

Cargo workspace

Over the course of time, your project has gotten quite large. Now, you are thinking about whether you could split the common parts of your code as separate crates to help manage complexity. Well, a Cargo workspace allows you to do just that. The concept of workspaces is that they allow you to have crates locally in a directory that can share the same Cargo.lock file and a common target or output directory. To demonstrate this, we'll create a new project that incorporates Cargo workspaces. The workspace is nothing but a directory with a Cargo.toml file in it. It doesn't have any [package] section, but has a [workspace] section in it. Let's create a new directory called workspace_demo and add the Cargo.toml file like so:

mkdir ...