these 3 derivations will be built:
  /nix/store/qrm91ij6xlyb9z7q8m45dq8y13z03ncw-treefmt.toml.drv
  /nix/store/njvz871ca22sdndr8k25yfm0mayavfpb-treefmt.drv
  /nix/store/khync0p3pr7vzrp4x0arcsw2wzqawvpm-treefmt-check.drv