Criando e empacotando uma aplicação CLI

# #![allow(unused_variables)]
#fn main() {
#[derive(StructOpt)]
#[structopt(name = "git", about = "the stupid content tracker")]
enum Git {

    #[structopt(name = "add")]
    Add {
        #[structopt(short = "i")]
        interactive: bool,

        #[structopt(short = "p")]
        patch: bool,

        #[structopt(parse(from_os_str))]
        files: Vec<PathBuf>
    },

    #[structopt(name = "fetch")]
    Fetch {
        #[structopt(long = "dry-run")]
        dry_run: bool,

        #[structopt(long = "all")]
        all: bool,

        repository: Option<String>
    },

    #[structopt(name = "commit")]
    Commit {
        #[structopt(short = "m")]
        message: Option<String>,

        #[structopt(short = "a")]
        all: bool
    }

}
#}