these 3 derivations will be built:
  /nix/store/fbmzw6j68an6hhr3a8520x9apl0aqm9p-treefmt.toml.drv
  /nix/store/3nb414j6hhgly2azfqyh8vb7i0qw857z-treefmt.drv
  /nix/store/blbfrfvr5y4x9zxfy4fpfmmlc77cfia1-treefmt-check.drv