this derivation will be built:
  /nix/store/s6yff4j874ixzjbi2j4dk7pmlbryw4qw-spaces-grub2-theme.drv
building '/nix/store/s6yff4j874ixzjbi2j4dk7pmlbryw4qw-spaces-grub2-theme.drv'

post-build step Upload to niks3: ok
time=2026-09-05T04:18:28.662Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-05T04:18:28.882Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-05T04:18:29.196Z level=INFO msg="Upload complete. (556ms)"