these 3 derivations will be built:
  /nix/store/wnmy6wmzc717gr2qm59qzsdiaf7x3ygk-treefmt.toml.drv
  /nix/store/v492nh9xhdi5clcr8ayq0sw15lrvgdpa-treefmt.drv
  /nix/store/dj0vcvdrvpb1s5rjb6hjmyi08hfnz4xc-treefmt-check.drv