Add initial configuration for alt

flake.nix

@@ -39,6 +39,29 @@
           }
         ];
       };
+      alt = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+
+        specialArgs = { inherit inputs; };
+        modules = [
+
+          ./hosts/alt/configuration.nix
+
+          # enable home manager
+          home-manager.nixosModules.home-manager
+          {
+            home-manager.useGlobalPkgs = true;
+            home-manager.useUserPackages = true;
+
+            home-manager.users.alex = import ./alex/home.nix;
+
+            # Optionally, use home-manager.extraSpecialArgs to pass arguments to
+            # home.nix
+            home-manager.extraSpecialArgs = { inherit inputs; isDesktop=false; };
+          }
+        ];
+      };
+      # other hosts...
     };
   };
 }

hosts/alt/configuration.nix

@@ -0,0 +1,23 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, inputs, ... }:
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ../modules/base.nix
+    ];
+
+  networking.hostName = "alt"; # Define your hostname.
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "25.05"; # Did you read the comment?
+}