these 3 derivations will be built:
  /nix/store/1yndxrghv8bqkp804yhh5v2yy5n9h112-treefmt.toml.drv
  /nix/store/z1dbz57qdaqbdxyh4gbhivrqi34myx7j-treefmt.drv
  /nix/store/7q4kjlx5kbdr8lhkvaz5azyh78h0vldd-treefmt-check.drv