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Bug#1041091: python3-virtualenv: re-execution of virtualenv command removes python-debian's debian directory

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  Bug#1041091: python3-virtualenv: re-execution of virtualenv command removes python-debian's debian directory Michael Prokop <mika@debian.org> - 2023-07-14 21:30 +0200

#1154246 — Bug#1041091: python3-virtualenv: re-execution of virtualenv command removes python-debian's debian directory

Package: python3-virtualenv
Version: 20.17.1+ds-1
Severity: important

Hi,

as funny as the subject might sound, this took a while to track
down. :) Reporting this, since this might bite other folks as well,
and I also have STR.

The behavior that was present until and incl. bullseye was as
follows (newlines between command lines added by myself to make it
easier to read/parse/follow):

| % podman run --pull=always --rm -i -t debian:bullseye bash
| root@9b5d718485de:/# cd
| root@9b5d718485de:~# apt update ; apt -y install python3-virtualenv
| [...]
| root@9b5d718485de:~# virtualenv --python=python3 virtualenv
| created virtual environment CPython3.9.2.final.0-64 in 162ms
|   creator CPython3Posix(dest=/root/virtualenv, clear=False, no_vcs_ignore=False, global=False)
|   seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv)
|     added seed packages: pip==20.3.4, pkg_resources==0.0.0, setuptools==44.1.1, wheel==0.34.2
|   activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
|
| root@9b5d718485de:~# . virtualenv/bin/activate
|
| (virtualenv) root@9b5d718485de:~# pip install python-debian
| Collecting python-debian
|   Downloading python_debian-0.1.49-py3-none-any.whl (132 kB)
|      |████████████████████████████████| 132 kB 5.9 MB/s
| Collecting chardet
|   Downloading chardet-5.1.0-py3-none-any.whl (199 kB)
|      |████████████████████████████████| 199 kB 18.4 MB/s
| Installing collected packages: chardet, python-debian
| Successfully installed chardet-5.1.0 python-debian-0.1.49
|
| (virtualenv) root@9b5d718485de:~# python3 -c "from debian import deb822"
|
| (virtualenv) root@9b5d718485de:~# virtualenv --python=python3 virtualenv
| created virtual environment CPython3.9.2.final.0-64 in 142ms
|   creator CPython3Posix(dest=/root/virtualenv, clear=False, no_vcs_ignore=False, global=False)
|   seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv)
|     added seed packages: chardet==5.1.0, pip==20.3.4, pkg_resources==0.0.0, python_debian==0.1.49, setuptools==44.1.1, wheel==0.34.2
|   activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
|
| (virtualenv) root@9b5d718485de:~# python3 -c "from debian import deb822"

So everything fine, no problems.

But on bookworm, this doesn't behave as such any longer:

| % podman run --pull=always --rm -i -t debian:bookworm bash
| root@491ed520fc26:/# cd
| root@491ed520fc26:~# apt update ; apt -y install python3-virtualenv
| [...]
| root@491ed520fc26:~# virtualenv --python=python3 virtualenv
| created virtual environment CPython3.11.2.final.0-64 in 439ms
|   creator CPython3Posix(dest=/root/virtualenv, clear=False, no_vcs_ignore=False, global=False)
|   seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv)
|     added seed packages: pip==23.0.1, setuptools==66.1.1, wheel==0.38.4
|   activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator
|
| root@491ed520fc26:~# . virtualenv/bin/activate
|
| (virtualenv) root@491ed520fc26:~# pip install python-debian
| Collecting python-debian
|   Downloading python_debian-0.1.49-py3-none-any.whl (132 kB)
|      ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 132.5/132.5 kB 3.7 MB/s eta 0:00:00
| Collecting chardet
|   Downloading chardet-5.1.0-py3-none-any.whl (199 kB)
|      ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 199.1/199.1 kB 6.5 MB/s eta 0:00:00
| Installing collected packages: chardet, python-debian
| Successfully installed chardet-5.1.0 python-debian-0.1.49
|
| (virtualenv) root@491ed520fc26:~# python3 -c "from debian import deb822"
|
| (virtualenv) root@491ed520fc26:~# virtualenv --python=python3 virtualenv
| created virtual environment CPython3.11.2.final.0-64 in 341ms
|   creator CPython3Posix(dest=/root/virtualenv, clear=False, no_vcs_ignore=False, global=False)
|   seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv)
|     added seed packages: chardet==5.1.0, pip==23.0.1, python_debian==0.1.49, setuptools==66.1.1, wheel==0.38.4
|   activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator
|
| (virtualenv) root@491ed520fc26:~# python3 -c "from debian import deb822"
| Traceback (most recent call last):
|   File "<string>", line 1, in <module>
| ModuleNotFoundError: No module named 'debian'

So the re-execution of `virtualenv` for some reason removes the
debian directory of python-debian on the filesystem. :-/
To highlight this from another run:

| (virtualenv) root@b52222d06fb7:~# ls virtualenv/lib/python3.11/site-packages/debian
| __init__.py  __pycache__  _arch_table.py  _deb822_repro  _util.py  _version.py  arfile.py  changelog.py  copyright.py  deb822.py  debfile.py  debian_support.py  debtags.py  deprecation.py  py.typed  substvars.py  watch.py
| (virtualenv) root@b52222d06fb7:~# virtualenv --python=python3 virtualenv
| created virtual environment CPython3.11.2.final.0-64 in 535ms
|   creator CPython3Posix(dest=/root/virtualenv, clear=False, no_vcs_ignore=False, global=False)
|   seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv)
|     added seed packages: chardet==5.1.0, pip==23.0.1, python_debian==0.1.49, setuptools==66.1.1, wheel==0.38.4
|   activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator
| (virtualenv) root@b52222d06fb7:~# ls virtualenv/lib/python3.11/site-packages/debian
| ls: cannot access 'virtualenv/lib/python3.11/site-packages/debian': No such file or directory
| (virtualenv) root@b52222d06fb7:~# pip list
| Package       Version
| ------------- -------
| chardet       5.1.0
| pip           23.0.1
| python-debian 0.1.49
| setuptools    66.1.1
| wheel         0.38.4

regards
-mika-

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