refactor(modules): make username not hardcoded

hosts/common.nix

@@ -17,6 +17,7 @@
     ];
   nixosModules.enable = true;
   nixosModules.hostname = hostname;
+  nixosModules.mainUser = "rafiq";
   hmModules.enable = true;
   nix-config.enable = true;
   boot-config.enable = true;

modules/hm/default.nix

@@ -8,6 +8,7 @@
 let
   moduleName = "hmModules";
   cfg = config."${moduleName}";
+  username = config.nixosModules.mainUser;
 in
 {
   imports = [
@@ -26,9 +27,9 @@ in
       useGlobalPkgs = true;
       useUserPackages = true;
       extraSpecialArgs = specialArgs;
-      users.rafiq.home = {
-        username = "rafiq";
-        homeDirectory = "/home/rafiq";
+      users."${username}".home = {
+        username = username;
+        homeDirectory = "/home/${username}";
         stateVersion = "25.05";
       };
     };

modules/hm/hardware.nix

@@ -3,10 +3,13 @@
   lib,
   ...
 }:
+let
+  username = config.nixosModules.mainUser;
+in
 {
   config = lib.mkMerge [
     (lib.mkIf config."hardware-config".usbAutoMount {
-      home-manager.users.rafiq.services.udiskie = {
+      home-manager.users.${username}.services.udiskie = {
         enable = true;
         settings = {
           # workaround for

modules/nixos/default.nix

@@ -27,6 +27,12 @@ in
         example = "goron";
         description = "The name this machine will be known by.";
       };
+      mainUser = lib.mkOption {
+        type = lib.types.str;
+        default = "";
+        example = "link";
+        description = "The main user of pantheon.";
+      };
     };
   };