warning: unknown setting 'eval-cores'
warning: unknown setting 'lazy-trees'
this derivation will be built:
  /nix/store/3s6yaysnd4bym3k6hm937xc1d1vmj3nd-formatting.drv
building '/nix/store/3s6yaysnd4bym3k6hm937xc1d1vmj3nd-formatting.drv'