this derivation will be built:
  /nix/store/dk9kyxnb288d4hw7w8nh3g7h3bxfl42d-treefmt-check.drv
building '/nix/store/dk9kyxnb288d4hw7w8nh3g7h3bxfl42d-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 1971 files
treefmt-check> emitted 535 files for processing
treefmt-check> formatted 535 files (0 changed) in 5.459s

upload niks3: ok