this derivation will be built:
  /nix/store/8nk5b7cz929ar4fzmb5qzb0mnr2w7azf-interpolate-conformance.drv
building '/nix/store/8nk5b7cz929ar4fzmb5qzb0mnr2w7azf-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok