this derivation will be built:
  /nix/store/3mnbmcs1g1vh321g96w5xakd6kj6b63s-interpolate-conformance.drv
building '/nix/store/3mnbmcs1g1vh321g96w5xakd6kj6b63s-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-26T00:29:21.395Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-26T00:29:21.874Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-26T00:29:22.273Z level=INFO msg="Upload complete. (987ms)"