this derivation will be built:
  /nix/store/z5s6g2gy7kswbf7zy13f8q4rr5k2v8c1-interpolate-conformance.drv
building '/nix/store/z5s6g2gy7kswbf7zy13f8q4rr5k2v8c1-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok