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Jupyter Lab: go-to-def does not work on some dependencies (No Jump targets found) #1429
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Description
Describe the Bug
Repro:
- pip install jupyterlab jupyter-lsp jupyterlab-lsp pandas pyrefly
- verify that Pyrefly is running in the bottom left, and select Pyrefly if it's not automatically turned on
- add
from pandas import read_csvto the first cell - put cursor on read-csv, right click, go to def
- "No Jump Targets Found"
- Server logs show "Handling non-canceled request textDocument/definition (154)" but the response is empty
Note that go-to-def on matplotlib functions seem to work correctly now (see #1045)
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Activity
[-]Jupyter Lab: go-to-def does not work on some dependencies[/-][+]Jupyter Lab: go-to-def does not work on some dependencies (No Jump targets found)[/+]Carreau commentedon Mar 5, 2026
I cannot reproduce; this might be due to something similar to #1585 ; if the location of the pandas install is outside the directories the Jupyter server has access to;
Doing a
read_csv?to see where the kernel seesread_csvmay help figuring out what is happening.This seem to come from pyrefly itself; but beyond this I am not sure what could be happening.
yangdanny97 commentedon Mar 13, 2026
This specific error no longer reproduces, but now I get the .lsp_symlink error in #1585 even on third-party dependencies
.lsp_symlink/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/matplotlib/pyplot.pyCarreau commentedon Mar 16, 2026
Ok, thanks for checking.