this derivation will be built:
  /nix/store/k6nwlfs429kw7r3ipddckwilr93i001x-interpolate-conformance.drv
building '/nix/store/k6nwlfs429kw7r3ipddckwilr93i001x-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-25T17:17:59.653Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-25T17:18:00.057Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-25T17:18:00.482Z level=INFO msg="Upload complete. (900ms)"