these 3 derivations will be built:
  /nix/store/hvmh3szb93j1n21l12gbz1khhh892l7z-treefmt.toml.drv
  /nix/store/x3bdi86pm53jwwjdnj4pb19srpmsnx8z-treefmt.drv
  /nix/store/ghn5l80757lr63l4axsvmmzm0fk3f35a-treefmt-check.drv