Choose the correct virtual environment over TRAMP

[e-eight]

Hi,

I am trying to use drepl-ipython over TRAMP. I have set up a Python virtual environment on a remote server, and trying to use the IPython in that environment with drepl-ipython. With the Inferior Python, I can specify which Python executable to use with C-u M-x run-python, and then provide the full path to the Python executable in my virtual environment. It is working. Is there a way to specify with IPython executable to use with drepl-ipython? Thanks!!

[astoff]

Good question. I don't see a fully satisfying solution to this problem (in contrast to the local machine case, where buffer-env or similar packages are a fully satisfying solution IMO), but there are many workarounds:

1. Since drepl respects the python-interpreter variable, you could set that as dir-local variable according to your remote machine, if you are fine with breaking local uses for the project in question.
2. You could dabble into connection-local variables and adjust tramp[-own]-remote-path to make the unqualified python executable point to your virtual env.
   3.. On the lines of your request, you could write a wrapper command like this:

(defun my-drepl-ipython ()
  (interactive)
  (let ((python-interpreter (read-from-minibuffer "Python executable: ")))
    (drepl-ipython)))

[e-eight]

I have been trying to play with TRAMP variables, but haven't managed a successful way of doing it. I will try the wrapper command.
I saw emacs-jupyter is able to connect to remote Python, but it is an involved process with having to create Jupyter kernels and such. If your wrapper works that will solve my problem for the moment.