these 3 derivations will be built:
  /nix/store/kcggx7gwqrqnzpzwnl3djjdwf5nnrlyl-treefmt.toml.drv
  /nix/store/myfldq9jv6nad3a0z1s1920pyihswl7h-treefmt.drv
  /nix/store/7s4wqbj0izaczc0shbdw32prlys34djf-treefmt-check.drv