this derivation will be built:
  /nix/store/fcmc02nfm7ynls6jhz442zdgr2mpdyyn-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/fcmc02nfm7ynls6jhz442zdgr2mpdyyn-bcachefs-module-7.0.0-38-generic.drv'...