this derivation will be built:
  /nix/store/k4iygx9jgl2cw2ncyz71zb998p63p2nx-treefmt-check.drv
building '/nix/store/k4iygx9jgl2cw2ncyz71zb998p63p2nx-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 420 files
treefmt-check> emitted 105 files for processing
treefmt-check> formatted 105 files (0 changed) in 323ms

upload niks3: ok