this derivation will be built:
  /nix/store/jh6jk8v2bg4xf5c1hmn3cj3ps2wgnf2f-interpolate-conformance.drv
building '/nix/store/jh6jk8v2bg4xf5c1hmn3cj3ps2wgnf2f-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok