these 3 derivations will be built:
  /nix/store/8hil5cqiw0q2aifqkm3l2srlw8jyny0p-treefmt.toml.drv
  /nix/store/51vsraiplcsvrrfp1694f88cvx6lk7ix-treefmt.drv
  /nix/store/jfbsbqn9w0pf1gc51jx95v19w3vs7fhw-treefmt-check.drv