diff-man 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-man
It will make the diff-man command available in your PATH if you've allowed the PATH to be modified when installing Rust. cargo uninstall diff-man uninstalls.
Adding diff_man library as a dependency
Run this command in a terminal, in your project's directory:
cargo add diff-man
To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:
diff-man = "0.1.7"
The diff_man library will be automatically available globally.
Read the diff_man library documentation.