these 3 derivations will be built:
  /nix/store/h78cg7igd9p4p1gpbhi5ci51bbkkqns2-treefmt.toml.drv
  /nix/store/z1x0f0fx8ldslh1jamlshvrncv802yh6-treefmt.drv
  /nix/store/z37azi4v8ka0slqia5nm3kyk4l93hv41-treefmt-check.drv