How to organize a large Rust project

Modules
2026-04-17T12:05:42+00:00
Organize large Rust projects by using Cargo workspaces to manage multiple crates and dependencies efficiently.

Organize a large Rust project by splitting code into multiple crates within a Cargo workspace.

  1. Create a workspace root directory and initialize it with cargo init --name my-workspace.
  2. Create a library crate for shared logic using cargo new --lib core.
  3. Create a binary crate for the executable using cargo new --bin app.
  4. Define the workspace members in the root Cargo.toml under the [workspace] section.
  5. Add the library crate as a dependency in the binary crate's Cargo.toml using path = "../core".
# Root Cargo.toml
[workspace]
members = ["core", "app"]

# app/Cargo.toml
[dependencies]
core = { path = "../core" }