this derivation will be built:
  /nix/store/ch639a1bj3gd2rc9n2aznb6pn0bx3y4n-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/ch639a1bj3gd2rc9n2aznb6pn0bx3y4n-bcachefs-module-7.0.0-27-generic.drv'...