this derivation will be built:
  /nix/store/4b1j04f3wqw0x6vd3mp4kcmmf6346qqj-interpolate-conformance.drv
building '/nix/store/4b1j04f3wqw0x6vd3mp4kcmmf6346qqj-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok