these 3 derivations will be built:
  /nix/store/2wysswznycywmbvlbywzh8x8ahnpa1h4-treefmt.toml.drv
  /nix/store/vgcgiwaw9mw03kibrg8ihdib1ww19v3b-treefmt.drv
  /nix/store/rh3172q2p8ssj65yb1x1484d8zs3ci0w-treefmt-check.drv