this derivation will be built:
  /nix/store/psmwa9y1f9qnh1jbjyfkaphfjngxg2y5-spaces-grub2-theme.drv
building '/nix/store/psmwa9y1f9qnh1jbjyfkaphfjngxg2y5-spaces-grub2-theme.drv'

post-build step Upload to niks3: ok
time=2026-09-04T08:45:30.602Z level=INFO msg="Uploading 1 paths to 127.0.0.1 (0 already cached)"
time=2026-09-04T08:45:30.602Z level=INFO msg="Uploading w1xiachcb5ayg80bjaj4y16gx74nlq34-spaces-grub2-theme (311.6KB)"
time=2026-09-04T08:45:31.245Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-04T08:45:31.685Z level=INFO msg="Upload complete. (1.11s)"