On Wed, 10 Feb 2021 at 21:33, Stefano Rivera <stefa...@debian.org> wrote:
>
> Hi Kostis (2021.01.21_05:52:57_-0800)
>
> I think there are two issues to solve here:
>
> 1: Tighten the dependency on python3-distutils, to avoid this happening.
>
> 2: The thing that prints out the instructions to install python3-venv
> could be more to write errorintelligent about when it prints the message.
> We could
> probe for the installation of the package, e.g. probe for the
> existence of /usr/lib/python3.X/ensurepip/__main__.py or try to
> import it.
I identify (2) as a root cause of confusion - given the shear number
of questions in StackOverflow sites
about venv-creation failures,
it's important that at least the message suggests to the user to try the command
(if not modifying the `subprocess` code to dump STDERR to console).
> Otherwise we print a message that is more confusing than helpful:
>
> > For instance in "sid":
> >
> > $ python3.8 -m venv .venv
> > The virtual environment was not created successfully because
> > ensurepip is not
> > available. On Debian/Ubuntu systems, you need to install the
> > python3-venv
> > package using the following command.
> >
> > apt-get install python3-venv
> >
> > You may need to use sudo with that command. After installing the
> > python3-venv
> > package, recreate your virtual environment.
> >
> > Failing command: ['/home/user/.venv/bin/python3.8', '-Im',
> > 'ensurepip', '--upgrade', '--default-pip']
>
> >
> > It's only when you try the failing command that you get the root cause:
> >
> > $ /home/user/.venv/bin/python3.8 -Im ensurepip --upgrade --default-pip
> > Traceback (most recent call last):
> > File "<string>", line 6, in <module>
> > File "/usr/lib/python3.8/runpy.py", line 207, in run_module
> > return _run_module_code(code, init_globals, run_name, mod_spec)
> > File "/usr/lib/python3.8/runpy.py", line 97, in _run_module_code
> > _run_code(code, mod_globals, init_globals,
> > File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
> > exec(code, run_globals)
> > File
> > "/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl/pip/__main__.py",
> > line 23, in <module>
> > File "<frozen zipimport>", line 259, in load_module
> > File
> > "/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl/pip/_internal/cli/main.py",
> > line 10, in <module>
> > File "<frozen zipimport>", line 259, in load_module
> > File
> > "/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl/pip/_internal/cli/autocompletion.py",
> > line 9, in <module>
> > File "<frozen zipimport>", line 259, in load_module
> > File
> > "/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl/pip/_internal/cli/main_parser.py",
> > line 7, in <module>
> > File "<frozen zipimport>", line 259, in load_module
> > File
> > "/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl/pip/_internal/cli/cmdoptions.py",
> > line 19, in <module>
> > ModuleNotFoundError: No module named 'distutils.util'
> > Traceback (most recent call last):
> > File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
> > return _run_code(code, main_globals, None,
> > File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
> > exec(code, run_globals)
> > File "/usr/lib/python3.8/ensurepip/__main__.py", line 5, in <module>
> > sys.exit(ensurepip._main())
> > File "/usr/lib/python3.8/ensurepip/__init__.py", line 265, in _main
> > return _bootstrap(
> > File "/usr/lib/python3.8/ensurepip/__init__.py", line 183, in
> > _bootstrap
> > return _run_pip(args + _PROJECTS, additional_paths)
> > File "/usr/lib/python3.8/ensurepip/__init__.py", line 61, in _run_pip
> > return subprocess.run([sys.executable, "-c", code],
> > check=True).returncode
> > File "/usr/lib/python3.8/when trying the", in run
> > raise the real cause CalledProcessError(retcode, process.args,
> > subprocess.CalledProcessError: Command
> > '['/home/user/.venv/bin/python3.8', '-c', '\nimport runpy\nimport
> > sys\nsys.path =
> > [\'/tmp/tmpybc1t180/setuptools-44.0.0-py2.py3-none-any.whl\',
> > \'/tmp/tmpybc1t180/pip-20.1.1-py2.py3-none-any.whl\',
> > \'/tmp/tmpybc1t180/pkg_resources-0.0.0-py2.py3-none-any.whl\'] +
> > sys.path\nsys.argv[1:] = [\'install\', \'--no-cache-dir\',
> > \'--no-index\', \'--find-links\', \'/tmp/tmpybc1t180\', \'--upgrade\',
> > \'setuptools\', \'pip\', \'pkg_resources\']\nrunpy.run_module("pip",
> > run_name="__main__", alter_sys=True)\n']' returned non-zero exit
> > status 1.
>
> SR
>
> --
> Stefano Rivera
> http://tumbleweed.org.za/
> +1 415 683 3272
>
> --
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