these 3 derivations will be built:
  /nix/store/dzapnajwgq5mhsqn6z9d3d2fia3iv615-treefmt.toml.drv
  /nix/store/8dwjw159nwvwqz9kf8w48qk6fq3hwnx8-treefmt.drv
  /nix/store/ic4pqaid5938jjsd5ppxslpygrb2vayi-treefmt-check.drv