these 3 derivations will be built:
  /nix/store/5qp71x0r65hp7864m90xx8qiq7shgsxg-treefmt.toml.drv
  /nix/store/1ph7lamcsckzcis04kpxh2msrnaxcy2g-treefmt.drv
  /nix/store/csd04r13lcchaa10zhgxpa7psj9jb1zn-treefmt-check.drv