[openconnect] Add openconnect-sso module

nixos/modules/default.nix

@@ -2,6 +2,7 @@
   imports = [
     ./desktop
     ./hardware
+    ./networking
     ./programs
     ./services
     ./virtualisation

nixos/modules/networking/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./openconnect-sso
+  ];
+}

nixos/modules/networking/openconnect-sso/default.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.networking.openconnect-sso;
+in {
+  options.sisyphus.networking.openconnect-sso.enable = lib.mkEnableOption "OpenConnect SSO";
+
+  config = lib.mkIf cfg.enable {
+    nixpkgs = {
+      config.permittedInsecurePackages = [
+        "python3.10-requests-2.28.2"
+        "python3.10-cryptography-40.0.1"
+      ];
+    };
+
+    environment.systemPackages = with pkgs; [
+      openconnect-sso
+    ];
+  };
+}