this derivation will be built:
  /nix/store/0af181n84bkgkwp09qkpxa1jgsih8zvb-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/0af181n84bkgkwp09qkpxa1jgsih8zvb-bcachefs-module-7.0.0-39-generic.drv'...