python-engineio_3: init at 3.14.2

Socket.IO and Engine.IO protocols are not backwards-compatible and major
versions of the client and server need to be coordinated.  It's therefore useful
to have python-engineio 3.x available for use with python-socketio 4.x.

pkgs/development/python-modules/python-engineio/3.nix

@@ -0,0 +1,67 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, fetchFromGitHub
+, aiohttp
+, eventlet
+, iana-etc
+, libredirect
+, mock
+, requests
+, six
+, tornado
+, websocket_client
+, websockets
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "python-engineio";
+  version = "3.14.2";
+
+  src = fetchFromGitHub {
+    owner = "miguelgrinberg";
+    repo = "python-engineio";
+    rev = "v${version}";
+    sha256 = "1r3gvizrknbv036pvxid1l726wkb0l43bdaz5y879s7j3ipyb464";
+  };
+
+  propagatedBuildInputs = [
+    six
+  ];
+
+  checkInputs = [
+    aiohttp
+    eventlet
+    mock
+    requests
+    tornado
+    websocket_client
+    websockets
+    pytestCheckHook
+  ];
+
+  preCheck = lib.optionalString stdenv.isLinux ''
+    echo "nameserver 127.0.0.1" > resolv.conf
+    export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf) \
+      LD_PRELOAD=${libredirect}/lib/libredirect.so
+  '';
+  postCheck = ''
+    unset NIX_REDIRECTS LD_PRELOAD
+  '';
+
+  # somehow effective log level does not change?
+  disabledTests = [ "test_logger" ];
+  pythonImportsCheck = [ "engineio" ];
+
+  meta = with lib; {
+    description = "Python based Engine.IO client and server v3.x";
+    longDescription = ''
+      Engine.IO is a lightweight transport protocol that enables real-time
+      bidirectional event-based communication between clients and a server.
+    '';
+    homepage = "https://github.com/miguelgrinberg/python-engineio/";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ graham33 ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -6307,6 +6307,8 @@ in {
 
   python-engineio = callPackage ../development/python-modules/python-engineio { };
 
+  python-engineio_3 = callPackage ../development/python-modules/python-engineio/3.nix { };
+
   python-etcd = callPackage ../development/python-modules/python-etcd { };
 
   python_fedora = callPackage ../development/python-modules/python_fedora { };