Installing CSF Firewall on NixOS

We’re starting to install NixOS servers into our infrastructure using NixOps. Now, we’re happy using iptables for now, but we wanted to know if there was any way to use CSF instead of iptables for the firewall. It has a lot of built-in stuff we’d like to use, and it’s what we use on a lot of our other servers.

Any chance there’s a NixOS module for CSF or anything? Can’t find one in nixpkgs.