this derivation will be built:
  /nix/store/wc09hzd3ngdk54r7iqc284k6k9mqpnl3-interpolate-conformance.drv
building '/nix/store/wc09hzd3ngdk54r7iqc284k6k9mqpnl3-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-09-01T10:15:24.207Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-09-01T10:15:24.655Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-01T10:15:24.994Z level=INFO msg="Upload complete. (856ms)"