this derivation will be built:
  /nix/store/cmk6m6vsnd7q8fqhsf8dcxzr1c5s4mj2-interpolate-conformance.drv
building '/nix/store/cmk6m6vsnd7q8fqhsf8dcxzr1c5s4mj2-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok