these 3 derivations will be built:
  /nix/store/j3nkpmp7grhvhzw74ll6vdjhrcif6hqa-treefmt.toml.drv
  /nix/store/33d45c676cy7j2qwm3yq73scimjswl8b-treefmt.drv
  /nix/store/kzl3gnq5g499zfw7s0bcs33ghdm3f4yy-treefmt-check.drv