added nixos configuration and home mananger stuff

modules/host-users.nix

@@ -1,27 +1,30 @@
 {
-  lib,
   pkgs,
   userName,
   hostname,
   ...
-} @ args:
-#############################################################
-#
-#  Host & Users configuration
-#
-#############################################################
-{
+} @ args: {
+  # Set up networking configuration
   networking.hostName = hostname;
   networking.computerName = hostname;
+  networking.firewall.enable = true; # VERY important, do not touch
+  # networking.firewall.allowedTCPPorts = [];
+  # networking.firewall.allowedUDPPorts = [];
+  networking.networkmanager.enable = pkgs.stdenv.isLinux; # Linux tool for managing network connections
   system.defaults.smb.NetBIOSName = hostname;
 
-  # Define a user account. Don't forget to set a password with ‘passwd’.
+  # Set up user accounts
+  # Don't forget to set a password with ‘passwd’!
   users.users."${userName}" = {
     home =
       if pkgs.stdenv.isDarwin
       then "/Users/${userName}"
       else "/home/${userName}";
     description = userName;
+    extraGroups =
+      if pkgs.stdenv.isLinux
+      then ["wheel" "video"]
+      else [];
   };
 
   nix.settings.trusted-users = [userName];