this derivation will be built:
  /nix/store/1k8dswr8khnf1f7qqczcjarq22wi2j1m-treefmt-check.drv
building '/nix/store/1k8dswr8khnf1f7qqczcjarq22wi2j1m-treefmt-check.drv' on 'ssh-ng://customer@mac02'