this derivation will be built:
  /nix/store/mj0g3zw7sgd9zxya8kacsdb5m315xxbx-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/mj0g3zw7sgd9zxya8kacsdb5m315xxbx-bcachefs-module-7.0.0-31-generic.drv'...