this derivation will be built:
  /nix/store/vd8f68ga0irz2pri4c4xlvb39yqv2a99-interpolate-conformance.drv
building '/nix/store/vd8f68ga0irz2pri4c4xlvb39yqv2a99-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok