this derivation will be built:
  /nix/store/4vn1x8fl4lwas27v5ky4nlrcv3z0bq3v-interpolate-conformance.drv
building '/nix/store/4vn1x8fl4lwas27v5ky4nlrcv3z0bq3v-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok