this derivation will be built:
  /nix/store/174gb89g7szj7whvm9gy3b0zkarh71az-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/174gb89g7szj7whvm9gy3b0zkarh71az-bcachefs-module-7.0.0-34-generic.drv'...