this derivation will be built:
  /nix/store/47c02zs0spi4y3nab8k7r58afnh16wqx-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/47c02zs0spi4y3nab8k7r58afnh16wqx-bcachefs-module-7.0.0-38-generic.drv'...