this derivation will be built:
  /nix/store/v8zbl34pqhpd2mjj0832z42vfmnyh55l-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/v8zbl34pqhpd2mjj0832z42vfmnyh55l-bcachefs-module-7.0.0-34-generic.drv'...