this derivation will be built:
  /nix/store/a79w3q58jx942zidyss1gg9iimm7y2j2-interpolate-conformance.drv
building '/nix/store/a79w3q58jx942zidyss1gg9iimm7y2j2-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok