these 3 derivations will be built:
  /nix/store/hyqjfm20x1kxkm5blg7nf9cmxrksqzrp-treefmt.toml.drv
  /nix/store/bsvyxhsxw39crqjwd3z17804y80x0w8d-treefmt.drv
  /nix/store/hp7kjgj4pwzwwww7hnxxq2bpaj96bzx4-treefmt-check.drv