this derivation will be built:
  /nix/store/r1mgzyjxwa8mvsn8cwd0a96x8h3h6aw9-interpolate-conformance.drv
building '/nix/store/r1mgzyjxwa8mvsn8cwd0a96x8h3h6aw9-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok