this derivation will be built:
  /nix/store/10k6y28849w0v482aq9y3lq5b9jjmww7-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/10k6y28849w0v482aq9y3lq5b9jjmww7-bcachefs-module-7.0.0-39-generic.drv'...