Unable to use Conda installed in Programdata

[Aelindgard]

Description

When using an installation of Miniconda that installs into "C:\Programdata", Jupyterlab does not recognise conda.exe

Reproduce

1. Go to 'settings'
2. Click on 'Select Path' for 'conda path'
3. Select "C:\ProgramData\miniconda3\Scripts\conda.exe"
4. See error "not valid conda executable, TypeError, path argument must be type string. Received undefined.'

Expected behavior

The conda.exe should be recognised.

Context

• Operating System and version: Windows 11
• JupyterLab-Desktop version: 4.2.5-1
• Installer: .exe

[JasonWeill]

@Aelindgard Thank you for opening this issue! I'm curious whether the backslashes in the path are causing the string to be parsed incorrectly. If you use slashes, such as C:/ProgramData/miniconda3/…, do you see the same error? Windows supports both delimiters for paths.

[Aelindgard]

Hi @JasonWeill have tried with forward slash for the path, same error is shown.

[richard-sim]

I have the same error on Windows 11, but with Conda (24.9.1, latest) installed in my user directory (the default location).

[richard-sim]

@JasonWeill : Looking into this, I believe it's a bug for initial JupyterLab Desktop installs, when the conda path isn't set yet and there is no CONDA_EXE environment variable (which is only set when a Conda environment is activated).

The GUI calls validateCondaPath before setting the condaPath, which calls runCommandInEnvironment > getCondaPath (returns undefined) > passed to condaEnvPathForCondaExePath > path.dirname, which throws the exception.

See:

jupyterlab-desktop/src/main/env.ts

Line 335 in ae61c96

runCommandInEnvironment(

I think an appropriate fix would be to pass the path that's being validated to runCommandInEnvironment, and not call getCondaPath if one is provided.

[richard-sim]

A workaround is to set the CONDA_EXE environment variable in a command prompt before launching JupyterLab Desktop, and then making sure the conda path is correct in the Python environment settings. I re-set the conda path in the GUI (even though it was showing up correctly at the time), just to be sure that it was saved and JLD would work when not run with CONDA_EXE set.

e.g.

set CONDA_EXE=C:\Users\rsim\miniforge3\Scripts\conda.exe
jlab