these 3 derivations will be built:
  /nix/store/81ps7skv240cssqhlvv92xwp4fnqg7z4-treefmt.toml.drv
  /nix/store/fsagd0636z4w8ns3yqndyb7gzsagq9lx-treefmt.drv
  /nix/store/hsna7gzpvb1gcfjm943awvqv7k3acv17-treefmt-check.drv