I am very hopeful that JupyterLab will get support for the Language Server Protocol sometime soon. That would make all the difference in the world for me. I'd s

I am very hopeful that JupyterLab will get support for the Language Server Protocol sometime soon. That would make all the difference in the world for me. I'd still have to use a terminal to build and run tests, but I wouldn't be surprised if a test runner comes along fairly quickly after that. (Relevant issue: https://github.com/jupyterlab/jupyterlab/issues/2163 https://github.com/jupyterlab/jupyterlab/issues/2163)