this derivation will be built:
  /nix/store/vlzjh4517n2bv52z2dmg15hfy3d4q7dd-interpolate-conformance.drv
building '/nix/store/vlzjh4517n2bv52z2dmg15hfy3d4q7dd-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok