these 3 derivations will be built:
  /nix/store/snmys1vf5xlh3wc2n42smfwl7z3qhnyj-treefmt.toml.drv
  /nix/store/y41hxb0l7g8qzs5b6yxdab94m2w774c7-treefmt.drv
  /nix/store/5s7l3pmq243qzxiqkb3a7p27dirjygwk-treefmt-check.drv