these 3 derivations will be built:
  /nix/store/h8x6hf5nihcm595rh8m1nn94basisxa5-treefmt.toml.drv
  /nix/store/vz9a2v2apv8nvg11fcmzs6kk9mnv8fzw-treefmt.drv
  /nix/store/7j16yrl01wdhxj919hi8wzb83lizgkzk-treefmt-check.drv