these 3 derivations will be built:
  /nix/store/6ih17gdg8is37g3aqmyrz12ad7xyd6vf-treefmt.toml.drv
  /nix/store/lqgrfpfqhkvf1sp4mlgi59pwf68szkb6-treefmt.drv
  /nix/store/rjfbh47zzffzab9qf3q1iabm5xs24hbz-treefmt-check.drv