this derivation will be built:
  /nix/store/kaznx97y1hycrgwy3fqvmxw9if49y4h2-treefmt-check.drv
building '/nix/store/kaznx97y1hycrgwy3fqvmxw9if49y4h2-treefmt-check.drv'
treefmt-check> traversed 550 files
treefmt-check> emitted 372 files for processing
treefmt-check> formatted 372 files (0 changed) in 3.667s

upload niks3: ok