Instead of deploying individual configuration files, you would generate `/etc/nixos/configuration.nix` + some modules maybe followed by a `nixos-rebuild switch`

Instead of deploying individual configuration files, you would generate `/etc/nixos/configuration.nix` + some modules maybe followed by a `nixos-rebuild switch`. There is not special support required in Chef/Ansible to support this feature. Both Chef and Ansible are available in nixpkgs.