these 3 derivations will be built:
  /nix/store/90dzqqwpb5s33jx0ap44fsn9rfd3gyy1-treefmt.toml.drv
  /nix/store/25cckihhf1gd1wdp7hym12ik72vi5db4-treefmt.drv
  /nix/store/hk3bx4mqf310xczicfwbdhf3lkylvkk2-treefmt-check.drv