this derivation will be built:
  /nix/store/njn8s2ny7a35qgxlcq0bhypw2xw8yh4s-interpolate-conformance.drv
building '/nix/store/njn8s2ny7a35qgxlcq0bhypw2xw8yh4s-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok