this derivation will be built:
  /nix/store/938zyj7wqxrda6nhh16j13nns9h7xlvp-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/938zyj7wqxrda6nhh16j13nns9h7xlvp-bcachefs-module-7.0.0-39-generic.drv'...