this derivation will be built:
  /nix/store/babf8jby6y8q4m23n4xqq4cb1g3zf69b-spaces-signal-cli-flags-test.drv
building '/nix/store/babf8jby6y8q4m23n4xqq4cb1g3zf69b-spaces-signal-cli-flags-test.drv'

post-build step Upload to niks3: ok
time=2026-09-20T04:32:46.945Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-20T04:32:50.638Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-20T04:32:50.925Z level=INFO msg="Upload complete. (4.009s)"