these 3 derivations will be built:
  /nix/store/f5x18lwwfmis22ynmn4j45gxcb187i9k-treefmt.toml.drv
  /nix/store/2szd9gx7fjs939l6spaxfhw8xk8mix4w-treefmt.drv
  /nix/store/2ys2sqi6ppp78mf3r283a9wigkwm1l31-treefmt-check.drv