these 3 derivations will be built:
  /nix/store/y2x5q9sw678sdbjh79rqyjsrpk72hmd6-treefmt.toml.drv
  /nix/store/d4wm8pgpsvd5c1dk3hh41i6n0i3xwrzs-treefmt.drv
  /nix/store/xkm5213fv6k8dfkifxp7s1a0hkgmxkrx-treefmt-check.drv