these 3 derivations will be built:
  /nix/store/nj0l73wsan0hjd6xw0qqi6piqch436qg-treefmt.toml.drv
  /nix/store/8g537a3vwnisypd9xi7chggb8lydm6zc-treefmt.drv
  /nix/store/sasnrr7pnibqmi4y4aqcchkncg0lgkk4-treefmt-check.drv