this derivation will be built:
  /nix/store/lp1kdd0l7fgqnimgz362rkp97b9sdbl7-interpolate-conformance.drv
building '/nix/store/lp1kdd0l7fgqnimgz362rkp97b9sdbl7-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok