these 3 derivations will be built:
  /nix/store/yqnnf879dv87y760vvp4nwx6xwxfqhqc-treefmt.toml.drv
  /nix/store/5ywh314sl7q4l31lhfqvhb4sgpik6qcf-treefmt.drv
  /nix/store/k4qk3b0akjcl6c1grcg3c0lirrgnqxb8-treefmt-check.drv