these 3 derivations will be built:
  /nix/store/90dzqqwpb5s33jx0ap44fsn9rfd3gyy1-treefmt.toml.drv
  /nix/store/25cckihhf1gd1wdp7hym12ik72vi5db4-treefmt.drv
  /nix/store/kzxwg27s1hw2b24h6ajf3v376rifxs8s-treefmt-check.drv