this derivation will be built:
  /nix/store/flkl4fikrkxc2gbfwlx45jlblkrblg6k-treefmt-check.drv
building '/nix/store/flkl4fikrkxc2gbfwlx45jlblkrblg6k-treefmt-check.drv'
treefmt-check> traversed 554 files
treefmt-check> emitted 375 files for processing
treefmt-check> formatted 375 files (0 changed) in 3.685s

upload niks3: ok