these 3 derivations will be built:
  /nix/store/qfy4wdgasz4cdwns2b6znawbk4nj35g8-treefmt.toml.drv
  /nix/store/aixaa4607x4nflvpzf093r6sw1xd2qi4-treefmt.drv
  /nix/store/h8m1z991i0mxlsjlnl4m9hnxllg4g3jy-treefmt-check.drv