these 3 derivations will be built:
  /nix/store/c1yxl7v60sigasbb1y2b63071zmmj0h6-treefmt.toml.drv
  /nix/store/nd1nwqd7dd52fbbj2ahc666ih87hc9y2-treefmt.drv
  /nix/store/2sbqllhil1i4bhirpqr0kp34md2vc4x0-treefmt-check.drv