this derivation will be built:
  /nix/store/7fmkzn7qp9qlxv3rp0dlxck90jz50kq4-interpolate-conformance.drv
building '/nix/store/7fmkzn7qp9qlxv3rp0dlxck90jz50kq4-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok