flake: add nixos-wsl input and mkHost helper for 3 hosts

- add nixos-wsl input (follows nixpkgs) for dogma-wsl
- refactor nixosConfigurations to mkHost helper with hostname/extraModules/homeFile
- keep alejandra, sops-nix, home-manager wiring

flake.nix

@@ -14,6 +14,11 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    nixos-wsl = {
+      url = "github:nix-community/NixOS-WSL/main";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     alejandra.url = "github:kamadorueda/alejandra/4.0.0";
     alejandra.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -27,38 +32,50 @@
     lazyvim,
     alejandra,
     ...
-  }: {
-    nixosConfigurations.dogma-nixos = nixpkgs.lib.nixosSystem {
-      system = "x86_64-linux";
-
-      specialArgs = {
-        inherit inputs;
+  }: let
+    mkHost = {
+      hostname,
+      system ? "x86_64-linux",
+      extraModules ? [],
+      homeFile ? ./home/${hostname}.nix,
+    }:
+      nixpkgs.lib.nixosSystem {
+        inherit system;
+        specialArgs = {inherit inputs;};
+        modules =
+          [
+            ./hosts/${hostname}/default.nix
+            inputs.home-manager.nixosModules.default
+            {
+              environment.systemPackages = [alejandra.defaultPackage.${system}];
+            }
+            {
+              home-manager.useGlobalPkgs = true;
+              home-manager.useUserPackages = true;
+              home-manager.extraSpecialArgs = {inherit inputs;};
+              home-manager.sharedModules = [
+                inputs.sops-nix.homeManagerModules.sops
+              ];
+              home-manager.users.mask = homeFile;
+            }
+            inputs.sops-nix.nixosModules.sops
+          ]
+          ++ extraModules;
+      };
+  in {
+    nixosConfigurations = {
+      dogma-nixos = mkHost {
+        hostname = "dogma-nixos";
+        extraModules = [./modules/nvidia-gtx1060.nix];
+      };
+      dogma-nixos-rtx = mkHost {
+        hostname = "dogma-nixos-rtx";
+        extraModules = [./modules/nvidia-rtx3070.nix];
+      };
+      dogma-wsl = mkHost {
+        hostname = "dogma-wsl";
+        extraModules = [inputs.nixos-wsl.nixosModules.default];
       };
-
-      modules = [
-        ./configuration.nix
-        inputs.home-manager.nixosModules.default
-        {
-          environment.systemPackages = [alejandra.defaultPackage.${"x86_64-linux"}];
-        }
-
-        {
-          home-manager.useGlobalPkgs = true;
-          home-manager.useUserPackages = true;
-
-          home-manager.extraSpecialArgs = {
-            inherit inputs;
-          };
-
-          home-manager.sharedModules = [
-            inputs.sops-nix.homeManagerModules.sops
-          ];
-
-          home-manager.users.mask = ./home.nix;
-        }
-
-        inputs.sops-nix.nixosModules.sops
-      ];
     };
   };
 }