this derivation will be built:
  /nix/store/3dkp9wl7di6fnqfkirvjp58629qr8fvj-treefmt-check.drv
building '/nix/store/3dkp9wl7di6fnqfkirvjp58629qr8fvj-treefmt-check.drv'
treefmt-check> traversed 517 files
treefmt-check> emitted 354 files for processing
treefmt-check> formatted 354 files (0 changed) in 13.5s

upload niks3: ok