these 3 derivations will be built:
  /nix/store/dnx1kgi1nxp7ywszmr50z9jjhizgj0hb-treefmt.toml.drv
  /nix/store/h3yjhv3cjxjrqk8zz8nc9648cc0grjf8-treefmt.drv
  /nix/store/7b15ykrcpbhkm8zaq7bki0gsvw2xkm26-treefmt-check.drv