Running jupyterlab via uv tool install#

Getting %pip to work#

This was the biggest sticking point for me. Jupyter has a useful magic command for installing packages:

1
%pip install llm

When I tried to run this I got this error:

/Users/simon/.local/share/uv/tools/jupyterlab/bin/python: No module named pip

It turns out we have an installation with no pip binary.

There may be a better way to do this, but I found that this worked, run in a Jupyter notebook cell:

1
import subprocess, sys
2
subprocess.check_call([sys.executable, "-m", "ensurepip"])

After I ran this, the %pip magic command worked as expected - I didn’t even need to restart the kernel.

Reported to Jupyter#

I opened an issue about this and submitted a PR with a potential fix.