these 3 derivations will be built:
  /nix/store/lii0f8jkcx6y5ydl3wrscscy3mp949w8-treefmt.toml.drv
  /nix/store/86k3v4r1aznyz90hgrp0fzd5mhicxb28-treefmt.drv
  /nix/store/c2hzk04dcmxyij48b2big89c09l6r8wl-treefmt-check.drv