use libpijul::TxnT;
use pijul_repository::Repository;
use std::io::Write;

        let repo = Repository::find_root(self.repo_path.clone())?;
        let txn = repo.pristine.txn_begin()?;
        let mut stdout = std::io::stdout();
        let current = txn.current_channel().ok();
        writeln!(
            stdout,
            "{}",
            current.map_or_else(|| "Not on a channel".into(), |c| format!("On channel: {c}"))
        )?;