this derivation will be built:
  /nix/store/g6s79syzq9a1hqswpw123jigvgpdh478-interpolate-conformance.drv
building '/nix/store/g6s79syzq9a1hqswpw123jigvgpdh478-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok