these 3 derivations will be built:
  /nix/store/h78cg7igd9p4p1gpbhi5ci51bbkkqns2-treefmt.toml.drv
  /nix/store/z1x0f0fx8ldslh1jamlshvrncv802yh6-treefmt.drv
  /nix/store/r3if07477vl92w0xqw0mms0hk8i0wdir-treefmt-check.drv