root@ip-172-31-14-172:/var/lib/juju/agents/unit-plugin-0# source .venv/bin/activate
(.venv)root@ip-172-31-14-172:/var/lib/juju/agents/unit-plugin-0# pip install python-apt
Collecting python-apt
  Using cached python-apt-0.7.8.tar.bz2
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-ddbggooh/python-apt/setup.py", line 6, in <module>
        from DistUtilsExtra.command import *
    ImportError: No module named 'DistUtilsExtra'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ddbggooh/python-apt/