these 3 derivations will be built:
  /nix/store/ypihg7nxligiq2732kg3sc4agv6d7119-treefmt.toml.drv
  /nix/store/g1da6j6ihagrlh0fr3dzq16cvm7c7d0h-treefmt.drv
  /nix/store/mcg9ibfjzrawy4awfn2s5kfsj5lg47i1-treefmt-check.drv