feat(nixos): add home-manager to flake

flake.lock

@@ -1,5 +1,25 @@
 {
   "nodes": {
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1740579671,
+        "narHash": "sha256-Dwt/3KknOQ4bgFG5YjqDT7oWRy27rPpDjAi2P0ok1zw=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "53c587d263f94aaf6a281745923c76bbec62bcf3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1740367490,
@@ -18,6 +38,7 @@
     },
     "root": {
       "inputs": {
+        "home-manager": "home-manager",
         "nixpkgs": "nixpkgs"
       }
     }

flake.nix

@@ -1,18 +1,40 @@
 {
+  description = "NixOS setup for one host with home-manager";
+
   outputs = {
     self,
     nixpkgs,
+    home-manager,
     ...
   } @ inputs: {
     nixosConfigurations = {
       nemesis = nixpkgs.lib.nixosSystem {
         specialArgs = { inherit inputs; };
-        modules = [ ./hosts/nemesis ];
+        modules = [ 
+          ./hosts/nemesis 
+          
+          # Add the home-manager user
+          home-manager.nixosModules.home-manager {
+            # Don't instantiate the home-manager instance of nixpkgs
+            home-manager.useGlobalPkgs = true;
+            # Install user packages to /etc/profiles
+            home-manager.useUserPackages = true;
+            # Pass inputs to home-manager configurations
+            home-manager.extraSpecialArgs = { inherit inputs; };
+            # Add the users
+            home-manager.users.rafiq.imports = [
+              ./users/rafiq
+            ];
+          }
+        ];
       };
     };
   };
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    
+    home-manager.url = "github:nix-community/home-manager";
+    home-manager.inputs.nixpkgs.follows = "nixpkgs";
   };
 }

hosts/nemesis/default.nix

@@ -61,11 +61,7 @@
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget
-  environment.systemPackages = with pkgs; [
+  environment.systemPackages = with pkgs; [];
-    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-    wget
-    git
-  ];
 
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.

users/rafiq/default.nix

@@ -0,0 +1,18 @@
+{ config, pkgs, inputs, ... }:
+
+{
+  home.username = "rafiq";
+  home.homeDirectory = "/home/rafiq";
+  
+  programs.git = {
+    enable = true;
+    userName = "rafiq";
+    userEmail = "mohammadrafiq567@gmail.com";
+    extraConfig = {
+      init.defaultBranch = "prime";
+    };
+  };
+
+  home.stateVersion = "25.05";
+  programs.home-manager.enable = true;
+}