begin migration to dendritic pattern

flake.nix

@@ -1,14 +1,14 @@
 {
-  description = "grey's custom NixOS config";
+  description = "grey's NixOS config";
 
   inputs = {
-    nixpkgs = {
-      url = "github:nixos/nixpkgs/nixos-unstable";
-    };
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
-    nixpkgs-mesa-overlay = {
-      url = "github:nixos/nixpkgs/e4f9df8a27c2b4871c665368e65bdb6852dd93e6";
-    };
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    import-tree.url = "github:vic/import-tree";
+
+    nixpkgs-mesa-overlay.url = "github:nixos/nixpkgs/e4f9df8a27c2b4871c665368e65bdb6852dd93e6";
 
     home-manager = {
       url = "github:nix-community/home-manager";
@@ -57,48 +57,10 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };*/
 
-    nix-cachyos-kernel = {
-      url = "github:xddxdd/nix-cachyos-kernel/release";
-    };
+    nix-cachyos-kernel.url = "github:xddxdd/nix-cachyos-kernel/release";
 
-    nix-flatpak = {
-      url = "github:gmodena/nix-flatpak/?ref=latest";
-    };
+    nix-flatpak.url = "github:gmodena/nix-flatpak/?ref=latest";
   };
 
-  outputs = {self,nixpkgs,nixpkgs-mesa-overlay,home-manager,plasma-manager,stylix,...}@inputs: let
-    system = "x86_64-linux";
-  in {
-    nixosConfigurations = builtins.listToAttrs (map (name: {
-      inherit name;
-      value = nixpkgs.lib.nixosSystem {
-        modules = [
-          ./hosts/${name}
-          stylix.nixosModules.stylix
-          home-manager.nixosModules.default {
-            home-manager = {
-              useGlobalPkgs = true;
-              useUserPackages = true;
-              users.grey = ./hosts/${name}/home.nix;
-              extraSpecialArgs = {
-                inherit inputs;
-                hostname = name;
-                stateVersion = "26.05";
-              };
-            };
-          }
-        ];
-        specialArgs = {
-          inherit inputs;
-          inherit system;
-          hostname = name;
-          stateVersion = "26.05";
-          pkgs-mesa-overlay = import nixpkgs-mesa-overlay {
-            inherit system;
-            config.allowUnfree = true;
-          };
-        };
-      };
-    }) ["takamaki" "kitagawa" "nixos-vm"]);
-  };
+  outputs = inputs@{ self, flake-parts, import-tree, ... }: flake-parts.lib.mkFlake { inherit inputs; } (import-tree ./modules);
 }