[Python-modules-team] Bug#956148: python3-virtualenv: Broken venv/bin/pip when using Python 2.7

[Sajith Sasidharan]

Package: python3-virtualenv
Version: 20.0.16-1
Severity: normal

I need to use Python 2.7, but it seems that I can't use Debian's
virtualenv 20.0.16, because venv/bin/pip fails in the following
manner:

$ mkdir /tmp/py
$ cd /tmp/py
$ virtualenv --python=python2.7 venv
$ ./venv/bin/pip
Traceback (most recent call last):
  File "./venv/bin/pip", line 5, in <module>
    from pip._internal.cli.main import main
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/cli/main.py", line 10, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module>
    from pip._internal.cli import cmdoptions
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/cli/cmdoptions.py", line 25, in <module>
    from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/locations.py", line 20, in <module>
    from pip._internal.utils.compat import WINDOWS
  File "/tmp/py/venv/lib/python2.7/site-packages/pip/_internal/utils/compat.py", line 29, in <module>
    import ipaddr as ipaddress  # type: ignore
ImportError: No module named ipaddr

This doesn't seem to happen with Python 3.


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (800, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-virtualenv depends on:
ii  python-pip-whl              20.0.2-4
ii  python3                     3.8.2-2
ii  python3-appdirs             1.4.3-2.1
ii  python3-distlib             0.3.0-1
ii  python3-distutils           3.8.2-2
ii  python3-filelock            3.0.12-2
ii  python3-importlib-metadata  1.5.0-1
ii  python3-pkg-resources       44.0.0-1
ii  python3-six                 1.14.0-2

python3-virtualenv recommends no packages.

python3-virtualenv suggests no packages.

-- no debconf information

--
"the lyf so short, the craft so long to lerne."
                 -- Chaucer.