process::Command,

    #[error("can not git add changes: {0}")]
    GitAdd(std::io::Error),
    #[error("can not git commit changes: {0}")]
    GitCommit(std::io::Error),

        self.commit()?;

    fn commit(&self) -> Result<(), Error> {
        let xdg_dirs = xdg::BaseDirectories::with_prefix("histdb-rs").unwrap();
        let datadir_path = xdg_dirs.get_data_home();
        Command::new("git")
            .arg("add")
            .arg(":/")
            .current_dir(&datadir_path)
            .output()
            .map_err(Error::GitAdd)?;
        let hostname = hostname::get().map_err(Error::GetHostname)?;
        Command::new("git")
            .arg("commit")
            .arg("-m")
            .arg(format!("added changes from {:?}", hostname))
            .current_dir(&datadir_path)
            .output()
            .map_err(Error::GitCommit)?;
        Ok(())
    }