these 3 derivations will be built:
  /nix/store/fi40mwyasz2rchv6zlirf410g758g6jr-treefmt.toml.drv
  /nix/store/yma135dlc82hlfg9rs4gx1lnbnak0012-treefmt.drv
  /nix/store/k12sw9mmj6hz77r3ahvvyc7ah25s17wm-treefmt-check.drv