these 3 derivations will be built:
  /nix/store/my7hvza7pkz19zkvcgzrfs7ny2s83c29-treefmt.toml.drv
  /nix/store/yshwb592s18iihnjdd796rz7kf6njd5m-treefmt.drv
  /nix/store/80vmac0rpxdzhibzg720szply7p2nrp5-treefmt-check.drv