this derivation will be built:
  /nix/store/zwi85907rc1hylm2q6kjhfd06l2g2cxm-ouroboros.drv
building '/nix/store/zwi85907rc1hylm2q6kjhfd06l2g2cxm-ouroboros.drv'
ouroboros> structuredAttrs is enabled

upload niks3: ok