feat: add mcp-gateway package

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packages/mcp-gateway/default.nix

@@ -0,0 +1,5 @@
+{
+  pkgs,
+  ...
+}:
+pkgs.callPackage ./package.nix { }

packages/mcp-gateway/package.nix

@@ -0,0 +1,36 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitHub,
+  pkg-config,
+  openssl,
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "mcp-gateway";
+  version = "2.11.0";
+
+  src = fetchFromGitHub {
+    owner = "MikkoParkkola";
+    repo = "mcp-gateway";
+    rev = "v${version}";
+    hash = "sha256-7IALz7hOnCeKtiEm8b3M7v5oy4hw173viyhNeqQIhTI=";
+  };
+
+  cargoHash = "sha256-t72gblzTwZDGkrbK8Otose1yg32JxMwe/7aQk8oNH+Q=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [
+    openssl
+  ];
+
+  meta = with lib; {
+    description = "Universal Model Context Protocol gateway that sits between AI client and MCP tools/servers";
+    homepage = "https://github.com/MikkoParkkola/mcp-gateway";
+    changelog = "https://github.com/MikkoParkkola/mcp-gateway/releases/tag/v${version}";
+    license = lib.licenses.mit;
+    sourceProvenance = with lib.sourceTypes; [ fromSource ];
+    mainProgram = "mcp-gateway";
+  };
+}