fixes and improvements

flake.nix

@@ -4,11 +4,23 @@
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-25.05";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
-    home-manager.url = "github:nix-community/home-manager/release-24.05";
+
+    home-manager.url = "github:nix-community/home-manager/release-25.05";
     home-manager.inputs.nixpkgs.follows = "nixpkgs";
+
+    nix-alien.url = "github:thiagokokada/nix-alien";
+
+    nix-ld.url = "github:Mic92/nix-ld";
+    # this line assume that you also have nixpkgs as an input
+    nix-ld.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, home-manager, ... }: {
+  outputs = { self, nixpkgs, nixpkgs-unstable, home-manager, nix-ld, ... }:
+  let
+    system = "x86_64-linux"; # or aarch64-linux
+    pkgs = import nixpkgs { inherit system; };
+  in
+  {
     nixosConfigurations = {
       dev-vm = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
@@ -20,6 +32,7 @@
           ./hosts/dev-vm/default.nix
         ];
       };
+
       alex-laptop = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         specialArgs = {
@@ -30,6 +43,21 @@
           ./hosts/alex-laptop/default.nix
         ];
       };
+
+      alex-desktop = nixpkgs.lib.nixosSystem {
+        specialArgs = {
+          inherit self system;
+        };
+        modules = [
+          ./system/common.nix
+          ./hosts/alex-desktop/default.nix
+          home-manager.nixosModules.home-manager
+	  #nix-ld.nixosModules.nix-ld
+	  # The module in this repository defines a new module under (programs.nix-ld.dev) instead of (programs.nix-ld)
+        # to not collide with the nixpkgs version.
+          #{ programs.nix-ld.dev.enable = true; }
+        ];
+      };
     };
   };
 }