modified user to be modular, separated machine specific configs

modules/common/users.nix

@@ -0,0 +1,37 @@
+{
+  lib,
+  pkgs,
+  userName,
+  hostname,
+  ...
+} @ 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;
+
+  # Set up user accounts
+  # Don't forget to set a password with ‘passwd’!
+  users.users."${userName}" = lib.mkMerge [
+    {
+      home =
+        if pkgs.stdenv.isDarwin
+        then "/Users/${userName}"
+        else "/home/${userName}";
+      description = userName;
+    }
+
+    (lib.mkIf (pkgs.stdenv.isLinux) {
+      group = "${userName}";
+      isNormalUser = true;
+    })
+  ];
+
+  users.groups.wyatt = {};
+
+  nix.settings.trusted-users = [userName];
+}