these 3 derivations will be built:
  /nix/store/hp2x8ny7lvnkjilg9acj1snlwx2p4kgj-treefmt.toml.drv
  /nix/store/gfpjy5him43cpgarxana34y0igiblw53-treefmt.drv
  /nix/store/k5z4ng9qsx2hp0jnnl8qi3724y2zxyvj-treefmt-check.drv