this derivation will be built:
  /nix/store/a4lq7r5rw6hccjp46py81lx7a8f56c6a-interpolate-conformance.drv
building '/nix/store/a4lq7r5rw6hccjp46py81lx7a8f56c6a-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok