this derivation will be built:
  /nix/store/qy1k39sx4a8ln7wlsl5jppkpavy3rx5x-treefmt-check.drv
building '/nix/store/qy1k39sx4a8ln7wlsl5jppkpavy3rx5x-treefmt-check.drv'
treefmt-check> traversed 250 files
treefmt-check> emitted 131 files for processing
treefmt-check> formatted 131 files (0 changed) in 775ms

post-build step Upload to niks3: ok
time=2026-08-29T15:06:19.536Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-08-29T15:06:19.984Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-29T15:06:20.194Z level=INFO msg="Upload complete. (679ms)"