this derivation will be built:
  /nix/store/x4n7nx7k8wg1342iq8yfry04yqp8yqvd-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/x4n7nx7k8wg1342iq8yfry04yqp8yqvd-bcachefs-module-7.0.0-28-generic.drv'...