this derivation will be built:
  /nix/store/yyx9kfh64q8gz60d2cwj476g40qc0ckq-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/yyx9kfh64q8gz60d2cwj476g40qc0ckq-bcachefs-module-7.0.0-38-generic.drv'...