this derivation will be built:
  /nix/store/lpnb25gv5bzmx83finyv6jscc9v64zbm-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/lpnb25gv5bzmx83finyv6jscc9v64zbm-bcachefs-module-7.0.0-39-generic.drv'...