try openconnect again

hosts/fw.cloonar.com/modules/openconnect.nix

@@ -1,18 +1,11 @@
 { config, pkgs, stdenv, ... }:
 let
-  vpnc = { name, sha256 }:
-    stdenv.mkDerivation {
-      inherit name;
-      outputHashMode = "recursive";
-      outputHashAlgo = "sha256";
-      outputHash = sha256;
-      builder = pkgs.writeShellScript "vpnc-script.sh" ''
-        #!/bin/sh
-        export INTERNAL_IP4_DNS=
+  vpnc = pkgs.writeShellScript "vpnc" ''
+    #!/bin/sh
+    export INTERNAL_IP4_DNS=
 
-        . ${pkgs.vpnc-scripts}/vpnc-script
-      '';
-    };
+    . ${pkgs.vpnc-scripts}/vpnc-script
+  '';
 in
 {
   sops.secrets.wrwks_vpn_key = {};
@@ -24,7 +17,7 @@ in
       protocol = "anyconnect";
       user = "exdpolakovics@wrwks.local";
       extraOptions = {
-        script = "${vpnc}/bin/vpnc-script.sh";
+        script = "${vpnc}";
       };
     };
   };