these 3 derivations will be built:
  /nix/store/2i1s1qfm863k7i3d1h7qppw7fbrsrvlk-treefmt.toml.drv
  /nix/store/6qdzykfcfw05fbc6g8r6gw7283ljff5a-treefmt.drv
  /nix/store/109ygp1nxgy4264xjczpx95aczi450hr-treefmt-check.drv