nixpkgs/pkgs/development/libraries/qt-5/5.5/qtwebsockets.nix

{ qtSubmodule, qtbase, qtdeclarative }:

qtSubmodule {
  name = "qtwebsockets";
  qtInputs = [ qtbase qtdeclarative ];
  postFixup = ''
    fixQtModuleCMakeConfig "WebSockets"
  '';
}