these 3 derivations will be built:
  /nix/store/cm8msy7m7s3d5kdqv7rz133q8jgssgrk-treefmt.toml.drv
  /nix/store/zzknq8dvnpcbssar3870kfyspqp3h1hr-treefmt.drv
  /nix/store/saq0ryv5py0rvyc7jkc31gwdqmaq03fi-treefmt-check.drv