Cursor fails to install extension dependencies like python and debugpy

[shashankvidiyalaC3]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I am an extension author and I have two dependent extensions, “ms-python.python”, “ms-python.debugpy”. When I attempt to install my extension on cursor I am struck in an infinite loop installing the extension. I have tried changing extensionDependencies to extensionPack for my extension and that doesn’t seem to help as well. This thread describe the same issue as mine but was closed because of no activity

Can't install the extensions in dev containers

Where does the bug appear (feature/product)? Cursor IDE Describe the Bug It seems that when an extension fails to install inside the container, the “outer” Cursor process attempts to download it externally rather than installing it within the container. In general, this fallback mechanism works well, but in a specific case it appears to trigger an infinite loop of extensionquery requests, which prevents the extension from being installed. Steps to Reproduce When installing anysphere.cursorpyri…

but he has the same problem as me.

Any advice on how to add dependencies to the extension such that cursor can install it correctly thanks.

Steps to Reproduce

Please try to install any extension that has dependency on “ms-python.python”,
“ms-python.debugpy”

Expected Behavior

It needs to install the dependency extensions

Operating System

MacOS

Version Information

Version: 2.4.7
VSCode Version: 1.105.1
Commit: ca0f9bf806f235ea014a22712cbcbf5e88ca77e0
Date: 2026-01-20T20:52:38.077Z
Build Type: Stable
Release Track: Default
Electron: 39.2.7
Chromium: 142.0.7444.235
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Darwin arm64 24.6.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report. This is a known issue. Cursor remaps some Microsoft extensions (ms-python.python → anysphere.python, ms-python.vscode-pylance → anysphere.cursorpyright), and when it resolves dependencies it can hit a dependency cycle.

As a temporary workaround, try installing ms-python.python and ms-python.debugpy manually before installing your extension. If the dependencies are already installed, the install may succeed without trying to resolve them again.

Let me know if that helped.

[shashankvidiyalaC3]

Hmm is there a plan to add a permanant solution, currently as a workaround I am publishing two different versions of my extension on vscode and open vsx market place but would love to get a long term solution for it.

[ilia-db (Ilia Babanov)]

Hey, seeing the same issue.

Cursor goes into infinite loop while trying to install extensions that have dependency on ms python. It goes like this:

1. User clicks “Install extension” → triggers ms-python.python as a dependency
2. ms-python.python is an extension pack that requires ms-python.vscode-pylance
3. Cursor’s marketplace silently remaps ms-python.vscode-pylance → anysphere.cursorpyright
4. anysphere.cursorpyright requires anysphere.python
5. Cursor’s marketplace silently remaps anysphere.python → ms-python.python
6. Back to step 2 → infinite loop

Can be reproduced by installing Databricks extension. But it’s inconsistent, for some people it works fine all the time.