this derivation will be built:
  /nix/store/g4nhxd7hv645azhqky8chjjvp50ryps6-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/g4nhxd7hv645azhqky8chjjvp50ryps6-bcachefs-module-7.0.0-31-generic.drv'...