this derivation will be built:
  /nix/store/785s5l1qqj65swrqf5kv3iv6mri0cqig-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/785s5l1qqj65swrqf5kv3iv6mri0cqig-bcachefs-module-7.0.0-29-generic.drv'...