uu_pr is both an executable binary that can be run, and a library that can be used in Rust programs.
Installing the pr executable
Assuming you have Rust/Cargo installed, run this command in a terminal:
cargo install uu_pr
It will make the pr command available in your PATH if you've allowed the PATH to be modified when installing Rust. cargo uninstall uu_pr uninstalls.
Adding uu_pr library as a dependency
Run this command in a terminal, in your project's directory:
cargo add uu_pr
To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:
uu_pr = "0.6.0"
The uu_pr library will be automatically available globally.
Read the uu_pr library documentation.