these 3 derivations will be built:
  /nix/store/yws18m1iwa2ing81vkrya98979l1i9dy-treefmt.toml.drv
  /nix/store/4pyn7qazhzsiv9x0mrpzjglxzwb9shhx-treefmt.drv
  /nix/store/lyxw3himwyg64fm984cvj5844p56fc80-treefmt-check.drv