these 3 derivations will be built:
  /nix/store/0ic9wypdxj0i6prdlnwpmwbns2m87345-treefmt.toml.drv
  /nix/store/j7qihdh8ji9vf82d2h12drwpmdydli2q-treefmt.drv
  /nix/store/hf9ads5m46sgcgvn6viczipaslfgy15m-treefmt-check.drv