these 3 derivations will be built:
  /nix/store/kp3pvgn13gybdzlg3dinzaqi64hqsd4j-treefmt.toml.drv
  /nix/store/cil3kcvydmv726vck9jhvy9pmn56cl5m-treefmt.drv
  /nix/store/37zp6r29xyq66sm9c9i32zmnmpv29w17-treefmt-check.drv