this derivation will be built:
  /nix/store/nbfcysccn9b2xklslm1dklw7y50n6nva-treefmt-check.drv
building '/nix/store/nbfcysccn9b2xklslm1dklw7y50n6nva-treefmt-check.drv'
treefmt-check> traversed 554 files
treefmt-check> emitted 375 files for processing
treefmt-check> formatted 375 files (0 changed) in 2.893s

upload niks3: ok