this derivation will be built:
  /nix/store/2nl38wqf17yw9kbgy9dk6690a6gdk4d9-interpolate-conformance.drv
building '/nix/store/2nl38wqf17yw9kbgy9dk6690a6gdk4d9-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok