these 3 derivations will be built:
  /nix/store/84hda9imhy7718hlashv7g3cxnd4lla1-treefmt.toml.drv
  /nix/store/4h59b0w8jrmwfilys82wn23baxgap59y-treefmt.drv
  /nix/store/zi9n9jc1kcg2648m1rq1nyn4fww835pd-treefmt-check.drv