these 3 derivations will be built:
  /nix/store/mwdppqbliyhb62rb9wpnrr0l4sgpdrax-treefmt.toml.drv
  /nix/store/by9ph7hx87fxym76vqflpdpgk8wgzlkq-treefmt.drv
  /nix/store/wfggvxwkjybym4iia1b5qpwgkdp42kjy-treefmt-check.drv