List only system packages (excluding those installed with --user) with pip list

[tuukkamustonen]

• Pip version: 8.1.1
• Python version: 2.7
• Operating system: Ubuntu 16.04

pip list lists a combination of system-wide and user-scoped packages (in ~/.local). There is pip list --user to list only the packages installed with --user flag, but it's not possible to do the listing the other way around, to list only packages installed under /usr/lib/.

Currently, if the same package is installed as both system-wide and as user-scoped, then only user-scoped package wins and pip list shows details for that. It's not possible to see what version is installed as system-wide.

Consider adding pip list --system (as opposed to pip list --user).

(Related, there is no pip uninstall --user or pip uninstall --system, to indicate which package to uninstall. Though I think this deserves a separate ticket.)

[pradyunsg]

I think pip list provides everything you'd need to do this by processing the output of pip list now -- there's a location key and pip list -v --format=json gives you, well, JSON output.

As an aside, there's #4575 which should probably help with what you're asking for.

I'll defer to other @pypa/pip-committers to figure out and decide if there's something actionable here.

[tuukkamustonen]

On a side note: looks like I'm actually running 8.1.1 and not 9.0.1. I have:

10:36 $ dpkg -l | grep -i python-pip
ii  python-pip                                      8.1.1-2ubuntu0.4                                         all          alternative Python package installer

I thought I upgraded pip locally but looks like local pip command resort to system-wide package for execution:

$ pip install --user pip\>9
Collecting pip>9
  Downloading https://pypi/root/pypi/+f/297/dbd16ef53bcef/pip-9.0.1-py2.py3-none-any.whl (1.3MB)
    100% |████████████████████████████████| 1.3MB 1.3MB/s 
Installing collected packages: pip
Successfully installed pip-8.1.1
You are using pip version 8.1.1, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
$ pip --version
pip 8.1.1 from /usr/lib/python2.7/dist-packages (python 2.7)
$ ~/.local/bin/pip --version
pip 8.1.1 from /usr/lib/python2.7/dist-packages (python 2.7)
$ ls ~/.local/lib/python2.7/site-packages/pip<TAB>
pip/                 pip-9.0.1.dist-info/ 

Updating original message to reflect that I'm actually not running the latest version...

[pradyunsg]

The issue here is probably that you don't have ~/.local/bin on your PATH or maybe that you have some pip, pip2, pip3 conflicts.

There's a patch in pip 10 that helps with the former by printing a warning when you install a script outside of PATH.

(edited)

[tuukkamustonen]

I do have ~/.local/bin in PATH but even invoking the command directly didn't work:

$ ~/.local/bin/pip --version
pip 8.1.1 from /usr/lib/python2.7/dist-packages (python 2.7)

Anyway, I think I just faced #3776 and related. Let's ignore that for now.

[tuukkamustonen]

I think #4575 is indeed a superset of what I'm suggesting here. Closing this one in favor of that one!

[pradyunsg]

Cool. :)

Thanks for filing this issue.