add os config for ks

flake.nix

@@ -13,6 +13,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     st-flexipatch.url = "https://git.antoinevaure.fr/ant/st-flexipatch/archive/master.zip";
+    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-25.05";
   };
 
   outputs =
@@ -22,6 +23,15 @@
       pkgs = inputs.nixpkgs.legacyPackages.${system};
       pkgs-unstable = inputs.unstable.legacyPackages.${system};
       nixgl = inputs.nixgl.packages.${system};
+      osConfig = name: nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs = {
+          inherit inputs;
+        };
+        modules = [
+          ./os/${name}/configuration.nix
+        ];
+      };
     in
     {
       homeConfigurations."anvaure@Allegro23-12" = inputs.home-manager.lib.homeManagerConfiguration {
@@ -90,24 +100,10 @@
         ];
       };
 
-      nixosConfigurations.basado = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ./os/basado/configuration.nix
-        ];
-      };
-
-      nixosConfigurations.moon = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ./os/moon/configuration.nix
-        ];
-      };
-
-      nixosConfigurations.hs = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [ ./os/hs/configuration.nix ];
-      };
+      nixosConfigurations.basado = osConfig "basado";
+      nixosConfigurations.moon = osConfig "moon";
+      nixosConfigurations.hs = osConfig "hs";
+      nixosConfigurations.ks = osConfig "ks";
 
       build-all = pkgs.runCommandNoCC "build-all" {
         buildInputs = 
@@ -117,6 +113,7 @@
           (osDerivation "basado")
           (osDerivation "moon")
           (osDerivation "hs")
+          (osDerivation "ks")
           (homeDerivation "anvaure@Allegro23-12")
           (homeDerivation "ant@hs")
           (homeDerivation "ant@basado")