this derivation will be built:
  /nix/store/wr0zrkxj7c351yh5x9fm08qj6sr2z5wy-interpolate-conformance.drv
building '/nix/store/wr0zrkxj7c351yh5x9fm08qj6sr2z5wy-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok