this derivation will be built:
  /nix/store/dm1f0xfwp4yqy0isjp0v0xpx4y2pfi7b-treefmt-check.drv
building '/nix/store/dm1f0xfwp4yqy0isjp0v0xpx4y2pfi7b-treefmt-check.drv'
treefmt-check> traversed 398 files
treefmt-check> emitted 191 files for processing
treefmt-check> formatted 191 files (0 changed) in 1.039s

post-build step Upload to niks3: ok
time=2026-09-18T10:36:10.129Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-18T10:36:10.521Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-18T10:36:11.056Z level=INFO msg="Upload complete. (948ms)"