these 3 derivations will be built:
  /nix/store/0mk9pbay1qj2fnx33hnn86lml9g6nw7f-treefmt.toml.drv
  /nix/store/7gh67gk4gyiysxyffgh4wymvfl85if7d-treefmt.drv
  /nix/store/0yz4l48307yqwi4q7rqax2ba1jj85f1h-treefmt-check.drv