this derivation will be built:
  /nix/store/rm0sir3bnv3xz2wvm5kw3b3vypi87zm3-treefmt-check.drv
building '/nix/store/rm0sir3bnv3xz2wvm5kw3b3vypi87zm3-treefmt-check.drv'
treefmt-check> traversed 520 files
treefmt-check> emitted 356 files for processing
treefmt-check> formatted 356 files (0 changed) in 2.513s

upload niks3: ok