these 3 derivations will be built:
  /nix/store/2xh2a8yg8w9vf3w453rk8kzi515w5lkx-treefmt.toml.drv
  /nix/store/fdg7ps0br4dyvc4vx3jm9r2gn6hlxh2s-treefmt.drv
  /nix/store/v1y3k0vql25xpwdyp54rypyx4i7kag9i-treefmt-check.drv