this derivation will be built:
  /nix/store/7yp3vd421xfsnbpxrw8rxd9qbp310h0r-interpolate-conformance.drv
building '/nix/store/7yp3vd421xfsnbpxrw8rxd9qbp310h0r-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-30T18:24:46.913Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-30T18:24:47.323Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-30T18:24:47.780Z level=INFO msg="Upload complete. (1.789s)"