this derivation will be built:
  /nix/store/pn83vny6lbijgzvyi3z2r0dmaffykqj8-treefmt-check.drv
building '/nix/store/pn83vny6lbijgzvyi3z2r0dmaffykqj8-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/pn83vny6lbijgzvyi3z2r0dmaffykqj8-treefmt-check.drv'