warning: unknown setting 'eval-cores'
warning: unknown setting 'lazy-trees'
this derivation will be built:
  /nix/store/i1v1g84khjc13w30jk78m1kybns4w9sy-formatting.drv
building '/nix/store/i1v1g84khjc13w30jk78m1kybns4w9sy-formatting.drv'