this derivation will be built:
  /nix/store/4g9bi6f1jwdmxfvyfl2ib1pc8l2afv11-interpolate-conformance.drv
building '/nix/store/4g9bi6f1jwdmxfvyfl2ib1pc8l2afv11-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-29T18:56:58.205Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-29T18:56:58.648Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-29T18:56:59.022Z level=INFO msg="Upload complete. (889ms)"