this derivation will be built:
  /nix/store/2rqjcl4pqgb6zxqyxfiq1vm7kf72fzq9-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/2rqjcl4pqgb6zxqyxfiq1vm7kf72fzq9-bcachefs-module-7.0.0-31-generic.drv'...