these 3 derivations will be built:
  /nix/store/sn9madd39qbnrw85srjwcgirkzgn7lj7-treefmt.toml.drv
  /nix/store/vkj1w3l0925i5r312lshrx49jvaah35x-treefmt.drv
  /nix/store/rq3hwi7r80rkwdbxklg1wdi6smx65dsn-treefmt-check.drv