this derivation will be built:
  /nix/store/h89z2s6qzgc86x33ckp2r4v8q1bhjw9q-interpolate-conformance.drv
building '/nix/store/h89z2s6qzgc86x33ckp2r4v8q1bhjw9q-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok