this derivation will be built:
  /nix/store/z7siwkazxm1fx96wmfkrnqj0n840wcvv-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/z7siwkazxm1fx96wmfkrnqj0n840wcvv-bcachefs-module-7.0.0-31-generic.drv'...