this derivation will be built:
  /nix/store/qq568hjc308kj9160xwak0a106kbmbrb-interpolate-conformance.drv
building '/nix/store/qq568hjc308kj9160xwak0a106kbmbrb-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-09-01T09:31:43.377Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-09-01T09:31:44.015Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-01T09:31:44.367Z level=INFO msg="Upload complete. (1.058s)"