these 3 derivations will be built:
  /nix/store/q540knwyih4ifblv6s5sryddpcpqsaj3-treefmt.toml.drv
  /nix/store/zgkvcvphrbdch28bmvc46f3vr61m9f13-treefmt.drv
  /nix/store/jllzh0qnfwn5xkpcma6wwczymw8aciby-treefmt-check.drv