these 3 derivations will be built:
  /nix/store/5c82qmwc7qw1b5ww92p5vjyis6hnwk7f-treefmt.toml.drv
  /nix/store/31mdcxr1j3nwpb3r03jah6nh3lqwhwa7-treefmt.drv
  /nix/store/qk6j00dlg3r3pkzy8rpp94qagjhfppi7-treefmt-check.drv