these 3 derivations will be built:
  /nix/store/j8grmpzfyrgifqg2sfvm30f2w586h3hb-treefmt.toml.drv
  /nix/store/5bpdwp3rbs05k1s8z40vc9yy6lqyi5nn-treefmt.drv
  /nix/store/2r52qiw8kjj3f8wwd8cj1mzyj1nr6iw4-treefmt-check.drv