this derivation will be built:
  /nix/store/w007d7rj5v7ik29vczvly89f9x5g6c5z-interpolate-conformance.drv
building '/nix/store/w007d7rj5v7ik29vczvly89f9x5g6c5z-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok