this derivation will be built:
  /nix/store/hjisc83kr508mjmw8h5wj225ss2z83c3-vars-present.drv
building '/nix/store/hjisc83kr508mjmw8h5wj225ss2z83c3-vars-present.drv'

post-build step Upload to niks3: ok
time=2026-09-23T06:06:29.445Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-23T06:06:29.877Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-23T06:06:30.365Z level=INFO msg="Upload complete. (940ms)"