these 3 derivations will be built:
  /nix/store/5ga42fxrpcl8d2j37blal0w9wvg7nqsm-treefmt.toml.drv
  /nix/store/vi4d0szglj4lgwzw7v48m3d3iiyj8gkf-treefmt.drv
  /nix/store/0dax83r1r7z1girs5yrr5p9zapaf6zxa-format-check.drv