pip-sync doesn't uninstall manually installed xgboost pip package.

[kyuwoo-choi]

Environment Versions

1. OS Type: linux
2. Python version: 3.10.14
3. pip version: 24.2
4. pip-tools version: 7.4.1

Steps to replicate

1. pip install xgboost
2. pip list | grep xgboost see xgboost 2.1.1 listed
3. pip-sync blank-requirements.txt tells "Everything up-to-date"

Expected result

removes the xgboost and nvidia-nccl-cu12 which is dep for xgboost. ...

Actual result

manually installed pip package and it's dependency leave ...

[AndydeCleyre]

I think your issue is that the pip-tools you're using is not installed in the same environment you're trying to modify, but it needs to be to work properly. Notice that in your pip list output pip-tools is absent. So the environment changed by the sync is a different one.