marimo-team
Works with VS Code, doesn't work with Cursor
Any hints how to make it work with Cursor? Yes, it's a fork and every single extension works for me so far. As for the error, looks like server fails to to start. When I add a cell I get this error:
Failed to save 'sandbox.py': Cannot read properties of undefined (reading 'key')
The file with app = marimo.App() is successfully created though.
And a short double check. Is my understanding correct that with VS Code we can only operate in edit/command mode? When I run marimo notebook I can only add/edit cells in py file with a standard jupyter approach, but can't use right pane for adding/editing, only for viewing.
Thanks
Any hints how to make it work with Cursor?
Are you seeing errors in cursor? Since they have forked vscode, I am not sure if they have broken any extension APIs or can use the same extensions.
And a short double check. Is my understanding correct that with VS Code we can only operate in edit/command mode?
You can run notebooks in Edit or App mode.
Not sure if it might be the same issue but I was able to make it work by updating the marimo.pythonPath to uv run python.
@mscolnick I can't run marimo in VSCode either:
2025-04-15 09:04:08.873 [info] Checking server... 2025-04-15 09:04:08.873 [info] [server-manager]: Starting server... 2025-04-15 09:04:08.894 [info] [server-manager]: Using interpreter ${workspaceFolder}/.venv/bin/python 2025-04-15 09:04:10.898 [info] [server-manager]: Server started at port 2818 2025-04-15 09:04:11.924 [info] Using interpreter: ${workspaceFolder}/.venv/bin/python 2025-04-15 09:04:11.924 [error] Error checking marimo installation: {"status":127,"signal":null,"output":[null,{"type":"Buffer","data":[]},{"type":"Buffer","data":[47,98,105,110,47,115,104,58,32,47,46,118,101,110,118,47,98,105,110,47,112,121,116,104,111,110,58,32,78,111,32,115,117,99,104,32,102,105,108,101,32,111,114,32,100,105,114,101,99,116,111,114,121,10]}],"pid":69068,"stdout":{"type":"Buffer","data":[]},"stderr":{"type":"Buffer","data":[47,98,105,110,47,115,104,58,32,47,46,118,101,110,118,47,98,105,110,47,112,121,116,104,111,110,58,32,78,111,32,115,117,99,104,32,102,105,108,101,32,111,114,32,100,105,114,101,99,116,111,114,121,10]}} 2025-04-15 09:04:41.945 [error] Could not fetch http://localhost:2818/. Is http://localhost:2818/ healthy? 2025-04-15 09:04:41.945 [error] [server-manager] Unexpected error starting server {"error":{}} 2025-04-15 09:04:41.945 [error] [server-manager] Unexpected error starting server {"error":{},"state":"started"}
pip install marimo && marimo tutorial intro from the same VSCode shell and same .venv works great though
Hi, we've launched a new VSCode extension at https://github.com/marimo-team/marimo-lsp (readme). It may mean this issue is resolved or no longer applicable. If the issue still exists, please file the issue on over on the new Issues page.