diff-rs is both an executable binary that can be run, and a library that can be used in Rust programs.
Installing the command-line executable
Assuming you have Rust/Cargo installed, run this command in a terminal:
cargo install diff-rs
It will make the diff-rs command available in your PATH if you've allowed the PATH to be modified when installing Rust. cargo uninstall diff-rs uninstalls.
Adding diff_rs library as a dependency
Run this command in a terminal, in your project's directory:
cargo add diff-rs
To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:
diff-rs = "0.2.3"
The diff_rs library will be automatically available globally.
Read the diff_rs library documentation.