these 3 derivations will be built:
  /nix/store/0bzh127yk80a5mzxbsyd8hy09g9wv23y-treefmt.toml.drv
  /nix/store/h2540bfpp3xyq8nmq3wylz2vcjjr1iq5-treefmt.drv
  /nix/store/4ia8zj803amqbqmsy0i4bp0mqia7b7rq-treefmt-check.drv