this derivation will be built:
  /nix/store/b82mjv7b76d0nfi2nsyvz6sgs3k82ycb-ouroboros.drv
this path will be fetched (20.9 MiB download, 64.8 MiB unpacked):
  /nix/store/wqpy2j3r0hjlmjyvq0wpd08rm5zn722y-uv-0.12.17