mcp server done

modules/dev/mcp.nix

@@ -6,21 +6,10 @@
   ...
 }:
 let
-  python = pkgs.python3.withPackages (
-    ps:
-    builtins.attrValues {
-      inherit (ps)
-        click
-        pytest
-        black
-        ruff
-        ;
-    }
-  );
-  packages = builtins.attrValues {
-    inherit python;
-    inherit (pkgs) codex; # codex-cli from openai
-  };
+  packages = [
+    pkgs.codex
+    inputs.self.packages.${pkgs.system}.nixos-mcp
+  ];
 in
 {
   options = {
@@ -34,17 +23,15 @@ in
     };
     devShells.mcp = lib.mkOption {
       type = lib.types.package;
+      description = "MCP dev shell for this repo";
       default = pkgs.mkShell {
         inherit packages;
         name = "mcp-dev-shell";
         shellHook = ''
           export CODEX_HOME=$PWD/.codex
-          export PYTHONPATH=$PWD/scripts/mcp-server/src
-          alias mcp-run="python -m mcp_server.server"
-          echo "MCP shell ready: codex + python + PYTHONPATH set"
+          echo "MCP shell ready: codex + nixos-mcp"
         '';
       };
-      description = "MCP + Codex shell for this repo";
     };
   };
   config = lib.mkIf config.my.dev.mcp.enable {