this derivation will be built:
  /nix/store/34dj2ayva8gckksy9kwksnxaiyk3rgsj-ouroboros.drv
this path will be fetched (0.0 KiB download, 64.8 MiB unpacked):
  /nix/store/cdj5kh05zgih6fc8bq128ala4c2mwybn-uv-0.12.17
building '/nix/store/34dj2ayva8gckksy9kwksnxaiyk3rgsj-ouroboros.drv'
ouroboros> structuredAttrs is enabled

upload niks3: ok