these 3 derivations will be built:
  /nix/store/kpscvh8xw8j8yziq1q89v2spahx1cg7j-treefmt.toml.drv
  /nix/store/bvanjmxbfz3232cd9zbh5sssy4gz5z3r-treefmt.drv
  /nix/store/3s31w2z2gjfzry1llzzx83c7rajy9300-treefmt-check.drv