this derivation will be built:
  /nix/store/ns0sxgbpifj6cqnm1pdnk8zvh3ip6kkp-treefmt-check.drv
building '/nix/store/ns0sxgbpifj6cqnm1pdnk8zvh3ip6kkp-treefmt-check.drv'
treefmt-check> traversed 446 files
treefmt-check> emitted 222 files for processing
treefmt-check> formatted 222 files (0 changed) in 1.203s

post-build step Upload to niks3: ok
time=2026-09-18T17:05:48.752Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-18T17:05:49.123Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-18T17:05:49.552Z level=INFO msg="Upload complete. (820ms)"