these 3 derivations will be built:
  /nix/store/k84zgizwws9bwyfczhv47skjzj017iwy-treefmt.toml.drv
  /nix/store/7qvbqha0qbzgr8wr1fqgixz7wzmg9qb3-treefmt.drv
  /nix/store/q01hqyjys72ib783wha0mhscz3cfhrl0-treefmt-check.drv