these 3 derivations will be built:
  /nix/store/8x16cjhqjdz3dc7f0prif5l1n2cy03kg-treefmt.toml.drv
  /nix/store/i3kvaqis3crdnvhpzfk87qvdab155n9j-treefmt.drv
  /nix/store/n0aj2f0603cz7zd97y8agala8yz48zc3-treefmt-check.drv