this derivation will be built:
  /nix/store/b8vpi1x0w2faiyq1cl4klyp55z40y9rm-interpolate-conformance.drv
building '/nix/store/b8vpi1x0w2faiyq1cl4klyp55z40y9rm-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok