this derivation will be built:
  /nix/store/i2y1m8m4wbd7fp420l9sfy6dmsz7dcif-treefmt-check.drv
building '/nix/store/i2y1m8m4wbd7fp420l9sfy6dmsz7dcif-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 1972 files
treefmt-check> emitted 536 files for processing
treefmt-check> formatted 536 files (0 changed) in 3.148s

upload niks3: ok