this derivation will be built:
  /nix/store/l8ywlf8xqhm13s8vpk37acadvffghp3q-interpolate-conformance.drv
building '/nix/store/l8ywlf8xqhm13s8vpk37acadvffghp3q-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-27T21:23:33.506Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-27T21:23:34.067Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-27T21:23:34.489Z level=INFO msg="Upload complete. (1.268s)"