these 3 derivations will be built:
  /nix/store/d5iz7fp2bb50ga7sw44wjardrbbzziah-treefmt.toml.drv
  /nix/store/x6dknapw4w7rsbaf1gi9f567b19cwq4s-treefmt.drv
  /nix/store/hh1lcsnmhky945cw0nxy569vrgap3c58-treefmt-check.drv