this derivation will be built:
  /nix/store/3bsn7r6w0lrad9i3gpgn5zgyphx8b8wd-interpolate-conformance.drv
building '/nix/store/3bsn7r6w0lrad9i3gpgn5zgyphx8b8wd-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-24T20:13:35.039Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-24T20:13:35.460Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-24T20:13:35.909Z level=INFO msg="Upload complete. (931ms)"