these 3 derivations will be built:
  /nix/store/bhn3bcs1m7173z9r2lmbbcm204vaxxzw-treefmt.toml.drv
  /nix/store/f3kkwl7rs7msvc8gjk4v96wwmqnfmijf-treefmt.drv
  /nix/store/jjcc6xjsgaynwrmky09zdz72a4jpmips-treefmt-check.drv