this derivation will be built:
  /nix/store/kbbgvpjm74bf2096rxg093xvapp5v0hb-interpolate-conformance.drv
building '/nix/store/kbbgvpjm74bf2096rxg093xvapp5v0hb-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok