this derivation will be built:
  /nix/store/8b2g4jjyban7i1lg74mzjr6aps9wd3sd-interpolate-conformance.drv
building '/nix/store/8b2g4jjyban7i1lg74mzjr6aps9wd3sd-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok