Why Cargo Exists
Cargo is a tool that allows Rust packages to declare their various dependencies and ensure that you’ll always get a repeatable build.
To accomplish this goal, Cargo does four things:
- Introduces two metadata files with various bits of package information.
- Fetches and builds your package’s dependencies.
rustcor another build tool with the correct parameters to build your package.
- Introduces conventions to make working with Rust packages easier.