error from `nix-build una.nix -A una`

error: anonymous function at /home/jack/code/repos/una/una.nix:15:26 called without required argument 'cmdargs', at /nix/store/mkppzp58dlgxgkakmdkvj2j11flryskr-nixos-17.09.1979.b664074623/nixos/pkgs/development/haskell-modules/make-package-set.nix:82:27