toxvpn: restartIfChanged = false & minor cleanups

nixos/modules/services/networking/toxvpn.nix

···
 {
   options = {
     services.toxvpn = {
-      enable = mkOption {
-        type        = types.bool;
-        default     = false;
-        description = "enable toxvpn running on startup";
-      };
+      enable = mkEnableOption "enable toxvpn running on startup";
 
       localip = mkOption {
         type        = types.string;
···
         Restart   = "on-success";
         Type      = "notify";
       };
+
+      restartIfChanged = false; # Likely to be used for remote admin
     };
 
     users.extraUsers = {

pkgs/tools/networking/toxvpn/default.nix

···
 
   cmakeFlags = [ "-DSYSTEMD=1" ];
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "A powerful tool that allows one to make tunneled point to point connections over Tox";
     homepage    = https://github.com/cleverca22/toxvpn;
     license     = licenses.gpl3;
+    maintainers = with maintainers; [ cleverca22 obadz ];
     platforms   = platforms.linux;
   };
 }